Auditing case assignment Study Example | Topics and Well Written Essays - 500 words

Auditing assignment - Case Study Example The balance sheet accounts will substantiate or given ample evidence that the revenues reported in the income statements are valid and relevant. For, an increase in cash in the balance would indicate that a cash sales transaction occurred. However, an increase in cash could also be attributed to collection of accounts receivable and not a new sales transaction. In addition, an increase in receivables account would indicate a possible sales on account transaction. On the other hand, an increase in receivables account could be due to an reinstatement or reversal of an accounts receivable that had been written off. Accounts receivable are written off if there is a probability that the a certain amount of receivables can no longer be collected because the customer may be absconded or has filed for bankruptcy in the courts2. Yes, the substantive approach appropriately was applied in EM's audit of Maxall. First, EM determined that a violation of the auditing principle that segregation of incompatible functions occurred. Auditing principles state that incompatible functions of recording, keeping and approving should not be placed in the shoulders of one person.

A Cup of Hot Tea Essay Example for Free

A Cup of Hot Tea Essay A cup Of Hot tea Tea is a kind of drink. We get It from leaves. Now-a-days it Is popular drink in the world. where grows: Tea grows well in the hilly places where rain water can not stand at all. It grows in Bangladesh, India, China and Japan. In Bangladesh it grows well in the hilly areas Sylhet and Chittagong. How grown: Tree plants grow seeds. Seeds are shown in March; seedlings are planted In rows five feet apart. They are regularly prunced and allowed to grow only four or five feet high. How gathered: When tree lants are four years of age, leaves are plucked three or four times a year. The leaves are first dried in the sun and roested in fire. Thus the leaves are ready for use and sale. How prepared: At firest water Is boiled in a pot. Tea leaves are put Into boiling water. After three or four minutes it Is poured into cups through a sieve. The suger and milk is mixed with it. Thus it becomes a good drink. usefulness: Tea is a useful drink to us. Refreshes body and mind. Gives us energy to work. It also helps us o keep awake. Taking tea three times a day Is healthy for healt While gossiping with our friends and relatives we can not heardly think without a cup of hot tea. It brings a new mood of gossiping And In our country it is an important crop also. Demerites: Tea is not always good for healt. Too much of it is bad for health. It kills our hunger. The Importance of tea In our national economy Is very great. It Conjunslon: brings a good deal of foreign money every year. So we should take care of better production of tea.

Dayton Hudson Corporation Case Analysis :: GCSE Business Marketing Coursework

Analysis of Dayton Hudson Corporation Case In the case of Dayton Hudson Corporation, the company fell into a situation of a hostile takeover attempted by the Dart Group in 1987. At that time, Kenneth Macke was the CEO of the Dayton Hudson Corporation and sternly disagreed with letting the company fall into the hands of the Haft’s. Macke’s decision on what could be done to terminate the takeover turned the circumstances over to the hands of the state of Minnesota where Dayton Hudson’s headquarters resided. Macke requested a special session of the legislature to revisit the Minnesota corporate takeovers statute. This proved to work in Dayton Hudson’s favor and a statute was enacted that left the decision of a takeover up to the Board of Directors of the company. The actions that were taken by Kenneth Macke to assist the company with the their takeover situation were an example of how business relies on the government to be responsible for social issues. When pleading their (DHC) case to the governor, Dayton Hudson made sure to make know all of the contributions that they have made to the community and how they have provided safe and secure jobs for its residents. They claimed that if they were to be taken over, the Haft’s would probably break up the company and sell it off to pay for the expenses incurred from the takeover. Jobs would be lost and there would most likely be no social contributions made by the Hafts. Out of the thinkers that we have studied regarding business’ responsibility, I think that the two that would agree with Macke’s decision to look to the government would be both Freeman and Friedman. In the readings that we have covered, we have seen that they are believers in that the government is who should be responsible for social issues in some way or another. I think that Freeman may feel a lot more strongly about Macke’s decision than Friedman because he argues that government is the sole caretaker when it comes to taking responsibility for social issues while Freeman argues that it is mainly government’s job, but that business plays a huge role in that responsibility. Friedman’s views are that business’ main responsibility is to maximize shareholders wealth and that in doing so, they are being socially responsible. He also contends that corporations are not people and therefore they cannot be responsible for social issues.

Nss Phy Book 2 Answer

1 1 2 3 C Motion I 7 (a) From 1 January 2009 to 10 January 2009, the watch runs slower than the actual time by 9 minutes. Therefore, when the actual time is 2:00 pm on 10 January 2009, the time shown on the watch should be 1:51 pm on 10 January 2009. Practice 1. 1 (p. 6) D (a) Possible percentage error 10 ? 6 = ? 100% 24 ? 3600 = 1. 16 ? 10 % 1 (b) = 1 000 000 days 10 ? 6 –9 It would take 1 000 000 days to be in error by 1 s. (b) Percentage error 9 = ? 100% 9 ? 24 ? 60 = 6. 94 ? 10–2% 4 (a) One day = 24 ? 60 ? 60 = 86 400 s Practice 1. 2 (p. 15) 1 2 3 4 5 C B D D (b) One year = 365 ? 86 400 = 31 500 000 s 5 Let t be the period of time recorded by a stop-watch. Percentage error = 0. 4 ? 100% ? 1% t t ? 40 s (a) Total distance she travels 2 ? ? 10 2 ? ? 20 2 ? ? 15 + + = 2 2 2 = 141 m (b) Magnitude of total displacement = 10 ? 2 + 20 ? 2 + 15 ? 2 = 90 m Direction: east Her total displacement is 90 m east. The minimum period of time is 40 s. 6 (a) Percentage error error due to reaction time = ? 100% time measured 0. 3 = ? 100% 10 = 3% 6 7 His total displacement is 0. With the notation in the figure below. (b) From (a), the percentage error of a short time interval (e. g. 10 s) measured by a stop-watch is very large. Since the time intervals of 110-m hurdles are very short in the Olympic Games, stop-watches are not used to avoid large percentage errors. Since ZX = ZY = 1 m, ? = ? = 60 °. Therefore, XY = ZX = ZY = 1 m The magnitude of the displacement of the ball is 1 m.  © 8 (a) The distance travelled by the ball will be longer if it takes a curved path. 7 (a) Length of the path = 0. 8 ? 120 = 96 m (b) No matter which path the ball takes, its displacement remains the same. (b) Length of AB along the dotted line 96 = 30. 6 m = (c) Magnitude of Jack’s average velocity 30. 6 ? 2 = = 0. 51 m s–1 120 Practice 1. 3 (p. 23) 1 B Total time 5000 5000 = + = 9821 s 1. 4 0. 8 5000 + 5000 = 1. 02 m s–1 Average speed = 9821 Practice 1. 4 (p. 31) 1 2 C B Final speed = 1. 5 ? 1 – 0. 2 ? 1 = 1. 3 m s–1 2 C Total time = 9821 + 10 ? 60 =10 421 s 5000 + 5000 Average speed = = 0. 96 m s–1 10 421 3 A By a = 3 D When the spacecraft had just finished 1 revolution, the spacecraft returned to its starting point. Therefore, its displacement was zero and its average velocity was also zero. v ? u , t v = u + at 36 = + ( ? 1. 5) ? 2 3. 6 = 7 m s–1 = 7 ? 3. 6 km h–1 = 25. 2 km h–1 Its speed after 2 s is 25. 2 km h–1. 4 5 D (a) Average speed 100 = = 10. m s–1 9. 69 (b) Yes. This is because the magnitude of the displacement is equal to the distance in this case. 4 B Take the direction of the original path as positive. Average acceleration of the ball ? 10 ? 17 = 0. 8 = –33. 8 m s–2 The magnitude of the average acceleration of the ball is 33. 8 m s– 2. v ? u By a = , t 100 ? 0 v ? u 3. 6 t= = = 4. 27 s a 6. 5 6 (a) Two cars move with the same speed, e. g. 50 km h–1, but in opposite directions. (b) A man runs around a 400-m playground. When we calculate his average speed, we can take 400 m as the distance and his average speed is non-zero. But since his displacement is zero (he returns to his starting point), his average velocity is zero. 5 The shortest time it takes is 4. 27 s.  © 6 Time / s –1 4 0 2 4 6 17 8 22 D Average speed 80 + 60 = 5 = 28 km h–1 Average velocity = Speed / m s 2 7 12 v ? u 22 ? 2 a= = 2. 5 m s–2 = t 8 The acceleration of the car is 2. 5 m s–2. 7 (a) I will choose ‘towards the left’ as the positive direction. 80 2 + 60 2 5 (b) 5 = 20 km h–1 C Total time 10 10 = + 2 3 = 8. 33 s v ? u , t u = v ? at = 9 ? (? 2) ? 3 = 15 m s–1 –1 (c) By a = Average speed 20 = 8. 33 = 2. 4 m s–1 Her average speed for the whole trip is 2. m s–1. The initial velocity of the skater is 15 m s . 8 (a) The object initially moves towards the left and accelerates towards the left. It will speed up. 6 7 8 9 10 C C C B A Magnitude of displacement = 2000 2 + 6000 2 = 6324. 6 m Magnitude of average velocity 6324. 6 = 4 ? 3600 = 0. 439 m s–1 6000 tan ? = 2000 ? = 71. 6 ° His average velocity is 0. 439 m s–1 (S 71. 6 ° E). (b) The object initially moves towards the right and accelerates towards the left. It will slow down. Its velocity will be zero and then increases in the negative direction (moves towards the left). Revision exercise 1 Multiple-choice (p. 5) 1 2 3 C D B  © 11 C Total time = 13 min = 780 s 840 ? 2 = 2. 15 m s ? 1 Average speed = 780 (b) Displacement from Sheung Shui to Lok Ma Chau 1000 = ? 6. 3 1 = 6300 m Magnitude of average velocity 6300 = 359 = 17. 5 m s–1 (1M) (1A) (1M) (1A) 12 13 D (HKCEE 2003 Paper II Q3) Conventional (p. 37) 1 Total time left for the two players = 4 ? 60 + 9 + 5 ? 60 + 16 = 565 s Total time they have been playing = 2 ? 60 ? 60 ? 565 = 6635 s (= 110 min 35 s = 1 h 50 min 35 s) (1A) 5 (a) Total distance = 1500 + 40 ? 1000 + 10 ? 1000 = 51 500 m Total time = 2 ? 3600 + 3 ? 60 + 8 = 7388 s Average speed 51 500 = 7388 = 6. 7 m s–1 (1M) (1A) 2 (a) 50 m (1A) (b) Ma gnitude of average velocity of Kitty 50 = (1M) 1? 60 + 15 = 0. 667 m s ? 1 (1A) (1M) (1A) (c) Average speed of the coach 5 + 50 + 5 = 1? 60 + 15 = 0. 8 m s ? 1 (b) Swimming: Average speed 1500 = 21 ? 60 + 28 = 1. 16 m s–1 Cycling: Average speed 40 000 = 1 ? 3600 + 1 ? 60 + 53 = 10. 8 m s–1 Running: Average speed 10 000 = 39 ? 60 + 47 = 4. 19 m s–1 (1M) His average speed was the highest in cycling. (1A) 3 (a) Since she measures the time interval based on 1 cycle of the pendulum, the error (0. 3 s) in measuring the cycle of the pendulum accumulates. is from 8 to 14 s. 1A) (1A) The range of the time interval (10 cycles) (b) When finding the time for one pendulum cycle, Jenny should time more pendulum cycles (e. g. 20) with the stop-watch and divide the time by the number of cycles. (1A) 4 (a) Time required 7. 4 ? 1000 = 20. 6 = 359 s (5 min 59 s) (1M) (1A)  © (c) Yes. Since the time interval of this competition is quite long, (1A) using stop-watch will not result in large percentage error as the reaction time for an average person is only 0. 2 s. (1A) (1M) (c) Total time = 5 min 45 s ? 1 min 58 s = 3 min 47 s = 3 ? 60 + 47 = 227 s v? u a= (1M) t 431 ? 0 = 3. = 0. 527 m s–2 (1A) 227 The average acceleration of the train is 0. 527 m s–2. 6 (a) v = u + at =0+6? 4 = 24 m s–1 = 86. 4 km h 86. 4 km h . –1 –1 (1A) The maximum speed of the car is 8 (1M) (a) Total distance = 8000 + 4000 + 5000 = 17 000 m Total time = 1 ? 3600 + 30 ? 60 + 45 ? 60 (b) v = u + at = 24 + (–4) ? 2 = 16 m s –1 –1 = 57. 6 km h (1A) –1 = 8100 s Average speed 17 000 = 8100 = 2. 10 m s–1 (1M) (1A) (c) The final speed of the car is 57. 6 km h . v? u a= (1M) t 16 ? 0 = 6 = 2. 67 m s–2 2. 67 m s–2. (1A) The average acceleration of the car is (b) 7 (a) Average speed 30 000 = 8 ? 60 = 62. m s–1 The average speed of the train is 62. 5 m s–1. (1M) (1A) (b) Maximum speed 430 = = 119. 4 m s? 1 > average speed 3. 6 (1A) The average speed must be smaller than the maximum speed because the train needs to speed up from start and slows down to stop during the trip. (1A) Magnitude of displacement = 3000 2 + 4000 2 = 5000 m Magnitude of average velocity 5000 = = 0. 617 m s–1 8100 4000 tan ? = 3000 (1A) ? = 53. 1 ° His average velocity is 0. 617 m s (N 53. 1 ° E).  © –1 (1A) 9 (a) Distance travelled = 10. 5 ? 3 ? 60 = 1890 m (1M) (1A) 10 (a) Total distance = (120 + 50) ? 1000 = 170 000 m (1M) (1A) b) Circumference of the track =2 r = 2 (400) = 2513 m The distance travelled by Marilyn is 3 1890 m which is about of the 4 circumference. (1A) (b) N ?XYZ is a right-angled triangle. Z ? 50 km 30 ° Y 60 ° X ? ? 120 km Magnitude of displacement (from town X to town Z) = 120 000 2 + 50 000 2 = 130 000 m 120 tan ? = 50 ? = 67. 4 ° Magnitude of displacement AB = 400 2 + 400 2 (1A) (1A) ? = 90 ° ? 67. 4 ° = 22. 6 ° ? = 60 ° ? 22. 6 ° = 37. 4 ° The total displacement of the car is 130 000 m (N 37. 4 ° E). = 566 m Magnitude of average velocity 566 = 3 ? 60 = 3. 14 m s 400 tan ? = 400 ? = 45 ° (S 45 ° E). –1 (c) (1A) Total time 170 000 = = 10 200 s 60 3. 6 Magnitude of average velocity 130 000 = 10 200 = 12. 7 m s–1 Its average velocity is 12. 7 m s (N 37. 4 ° E). –1 (1A) (1A) (1M) (1A) Her average velocity is 3. 14 m s–1  © 11 (a) AC = 60 2 + 80 2 = 100 m 80 tan ? = ? = 53. 1 ° 60 (1M) The total displacement of the athlete is 100 m (S53. 1 °W). (1A) 13 (Correct label of velocity with correct direction (towards the left). ) (Correct label of acceleration with correct direction (towards the right). ) (1A) (1A) (a) The coin moves in the following sequence: B A C C A Therefore, it is at A finally. Displacement of the coin = 15 cm (1A) (1M) (1A) (1M) b) Distance travelled by the coin = 15 + 30 + 30 = 75 cm (b) Time / s v / m s–1 0 –6 1 –4 2 –2 3 0 4 +2 5 +4 6 +6 (1A) (1A) (c) (i) Total time = 2 s ? 4 = 8 s Average velocity 15 ? 10 ? 2 = 8 = 0. 0188 m s? 1 (0. 5A ? 6) (1M) (1A) (c) The car will slow down and its speed will drop to zero. After th at the car will move towards the right with increasing speed (uniform acceleration). (1A) (1M) (1A) (1M) (1A) (1M) (1A) A (ii) Average speed 75 ? 10 ? 2 = 8 = 0. 0938 m s? 1 (1M) (1A) 12 (a) Total distance travelled = 60 + 80 + 80 + 60 = 280 m (d) (i) The coin moves in the following sequence: B A C C A B B b) Magnitude of total displacement = 80 + 80 = 160 m 160 m (west). The total displacement of the athlete is Therefore, it is at B finally. zero. the coin is also zero. (1A) (1M) (1A) (1M) (1A) (1M) (1A) (ii) The displacement of the coin is Therefore the average velocity of (c) Total distance travelled = 280 + 60 + 80 = 420 m 14 (a) Total distance = ? r = 5? ? 60 m C = 15. 7 m Total displacement =5+5 = 10 m 80 m  © The total displacement travelled by her is 10 m. (b) Jane’s statement is incorrect. (1A) Since both girls start at X and meet at Y, they have the same displacement. (1A) Betty’s statement is incorrect. 1A) Since both girls return to their starting point, their displacements are zero. (1A) Physics in articles (p. 40) (a) From 19 January 2006 to 28 February 2007, (1A) It takes New Horizons spacecraft a total of 406 days to travel from the Earth to Jupiter. (1A) (b) (i) Average speed total distance travelled = total time of travel (1M) = 8 ? 108 406 ? 24 (1A) (1M) = 8. 21 ? 104 km h? 1 (ii) Average acceleration change in velocity = total time of travel = (8. 23 ? 5. 79)? 10 4 406 ? 24 = 2. 50 ? 104 km h? 2 (1A) (1A) (c) July 2015  © 2 1 2 3 4 5 Motion II 10 (a) The object moves with a constant elocity. Practice 2. 1 (p. 61) D B D D B 30 ? 10 = 10 m s–1 v= 2 (b) The object moves with a uniform acceleration from rest. (c) The object moves with a uniform deceleration, starting with a certain initial velocity. Its velocity becomes zero finally. The velocity of the car at t = 2 s is 10 m s–1. 6 7 C (d) The object first moves with a uniform acceleration from rest, then at a constant velocity, and finally moves with a smaller uniform acceleration again. (a) Total displacement = 4 ? 5 + (? 5) ? (7 ? 5) = 10 m The total displacement from the staircase to her classroom is 10 m. (e) The object moves at a constant velocity and then suddenly moves at constant velocity of same magnitude in the opposite direction. (b) Classroom C 8 (f) The object moves with uniform deceleration from an initial velocity to rest, and continue to move with the uniform acceleration of the same magnitude in opposite direction. 9 (a) The object accelerates. (b) The object first moves with a constant velocity. Then it becomes stationary and finally moves with a higher constant velocity again. 11 (a) The object moves with zero acceleration (with constant velocity of 50 m s–1). (b) The object moves with a uniform cceleration of 5 m s–2. (c) 12 The object moves with uniform deceleration of 5 m s–2. (c) The object decelerates to rest, and then accelerates in opposite direction to return to its starting point. (a) It moves away from the sensor. (d) The object moves with uniform velocity towards the origin (the zero displacement position), passes the origin, and continues to move away from the origin with the same uniform velocity.  © (b) (c) The greatest rate of change in speed 0 ? 3. 5 = 2 = –1. 75 m s–2 (d) Total distance travelled = area under the graph 3. 5 ? 2 2 ? 6 = + 2 2 = 9. 5 m Practice 2. 2 (p. 71) 1 C By v2 = u2 + 2as, 290 3. 6 2 13 (a) =0+2? 1? s s = 3240 m = 3. 24 km < 3. 5 km The minimum length of the runway is 3. 5 km. 2 B Cyclist X is moving at constant speed. Time for cyclist X to reach finish line displacement 150 = = = 30 s time 5 For cyclist Y: u = 5 m s–1, s = 250 m, (b) Total distance travelled = area under the graph (12 + 6) ? 3 = 2 = 27 m a = 2 m s–2 By s = ut + 1 2 at , 2 1 250 = 5 ? t + ? 2 ? t2 2 (c) Average speed total distance travelled = time taken 27 = 3 t = 13. 5 s or t = ? 18. 5 s (rejected) Y needs 13. 5 s to reach finish line. Therefore, cyclist Y will win the race. 3 B Since the bullet start decelerates after fired into the wall, we could just consider the displacement of the bullet in the wall. To prevent the bullet from penetrating the wall, the bullet must stop in the wall. = 9 m s–1 14 (a) She moves towards the motion sensor. (b) The highest speed of the girl in the journey is 3. 5 m s–1.  © By v2 = u2 + 2as, 0 = 500 + 2 ? (? 800 000) ? s 2 8 By v = u + at, 14 = u + 2 ? 5 u = 4 m s–1 s = 0. 156 m = 15. 6 cm < 15. 8 cm The minimum thickness of the wall is 15. 8 m. By v2 = u2 + 2as, 142 = 42 + 2 ? 2 ? s s = 45 m 4 C When the dog catches the thief at t = 5 s, its total displacement is 30 m. The dog is sitting initially, so u = 0. 1 By s = ut + at2, 2 1 30 = 0 + a(5)2 2 The displacement of the girl is 45 m. 9 (a) v = u + at = 0 + 20 ? 0. 3 = 6 m s? 1 The horizontal speed of the ball travelling towards the goalkeeper is 6 m s? 1. a = 2. 4 m s–2 Its acceleration is 2. 4 m s–2. (b) By v2 = u2 + 2as, 02 ? 62 a= = –22. 5 m s? 2 2 ? 0. 8 The deceleration of the football should be 22. 5 m s? 2. 5 6 D 90 36 ? v? u = 3. 6 3. 6 = 1. 5 m s–2 a= t 10 By v = u + 2as, 2 2 10 (a) The reaction time of the cyclist is 0. 5 s. s= v ? u = 2a 2 2 90 3. 6 36 3. 6 2 ? 1. 5 ? 2 2 = 175 m (b) Braking distance (2. ? 0. 5)? 15 = 11. 25 m = 2 Thinking distance = 15 ? 0. 5 = 7. 5 m Stopping distance = 11. 25 + 7. 5 = 18. 75 m child. 20 m The distance travelled by the motorcycle is 175 m and its acceleration is 1. 5 m s . –2 7 (a) Thinking distance = speed ? reaction time 108 = ? 0. 8 = 24 m 3. 6 Therefore, the bicycle would not hit the (b) Since the car decelerates uniformly, braking distance v+u = ? t 2 108 +0 = 3. 6 ? (3 ? 0. 8) 2 = 33 m 11 By v = u2 + 2as, 0 = 32 + 2 ? (–0. 5) ? s s=9m 8m Therefore, the golf ball can reach the hole. 2 12 (a) (i) By v = u + at, 0 = u + (–4)(4. 75) u = 19 m s–1 The initial velocity of the car is 19 m s–1. (c) Stopping distance = thinking distance + braking distance = 24 + 33 = 57 m  © (ii) By v2 = u2 + 2as, 0 = 19 + 2 ? (–4) ? s s = 45. 1 m 2 3 C For option A, apply equation v2 = u2 – 2gs and take s = 0 (the ball returns to the second floor), v = –u = –10 m s–1 (vertically downwards) The displacement of the car before it stops in front of the traffic light is 45. 1 m. This is the same velocity as the initial velocity of option B. Therefore, in both ways the ball has the same vertical speed when it reaches the ground. (b) By v = u + 2as, 17 = 0 + 2 ? 3 ? s s = 48. 2 m 2 2 2 The displacement of the car between starting from rest and moving at 17 m s is 48. 2 m. –1 4 B Take the upward direction as positive. 1 By s = ut + at2, 2 1 0 = u ? 30 + ? (? 10) ? 302 2 u = 150 m s–1 13 (a) By v2 = u2 + 2as, v2 = 0 + 2 ? 0. 1 ? 500 v = 10 m s–1 His speed is 10 m s . –1 (b) Consider the first section. By v = u + at, v? u t= a 10 ? 0 = 0. 1 = 100 s Consider the second section. 1 By s = ut + at2, 2 1 800 = 10t + ? 0. 5t2 2 t = 40 s or t = –80 s (rejected) The speed of the bullet is 150 m s–1 when it is fired. 5 Speed of stone Equation used t=1s t=2s t=3s t=4s v = u + at Distance travelled by the stone 1 s = ut + at 2 2 m 20 m 45 m 80 m 10 m s–1 20 m s 30 m s –1 –1 40 m s–1 Total time taken = 100 + 40 = 140 s It takes 140 s for Jason to travel downhill. 6 1 By s = ut + at2, 2 1 10 = 0 + (10) t2 2 t = 1. 41 s v = u + at Practice 2. 3 (p. 83) 1 2 D D = 0 + 10(1. 41) = 14. 1 m s–1 It takes 1. 41 s for a diver to drop from a 10-m platform. His speed is 14. 1 m s–1 when he enters the water.  © 7 Take the upward direction as positive. By v = u + 2as, 4 = 0 + (2)(–10)s s = 0. 8 m 2 2 2 Besides, since Y spends a shorter time to reach its highest point, it should be fired after X. 10 (a) By s = ut + The highest position reached by the puppy is 0. m above the ground. 8 (a) Consider the boy’s downward journey. Take the downward direction as positive. 1 By s = ut + at2, 2 1 0. 5 = 0 + (10) t2 2 t = 0. 316 s 1 2 at , 2 1 120 = 8t + ? 10 ? t2 2 t = 4. 16 s or t = ? 5. 76 s (rejected) It takes 4. 16 s to reach the ground. (b) v = u + at = 8 + 10 ? 4. 16 = 49. 6 m s–1 Its speed on hitting the ground is 49. 6 m s–1. 11 (a) Distance between the ceiling and her hands = 6 – 2 – 1. 2 = 2. 8 m Hang-time of the boy = 0. 316 ? 2 = 0. 632 s (b) Let s be her vertical displacement when she jumps. As the maximum jumping speed is 8 m s–1, i. e . u = 8 m s–1. By v2 = u2 + 2as, v2 ? 2 s= 2a 2 0 ? 82 = (upwards is positive) 2 ? (? 10) s = 3. 2 m > 2. 8 m Therefore, the indoor playground is not safe for playing trampoline. 1 (a) By s = ut + at2, 2 1 132 = 0 ? t + ? 10 ? t2 2 t = 5. 14 s The vehicle can experience a free fall in the Zero-G facility for 5. 14 s. (b) Take the upward direction as positive. By v = u + 2as, 0 = u + 2 ? (–10) ? 0. 5 u = 3. 16 m s–1 2 2 2 The jumping speed of the boy is 3. 16 m s–1. 9 Take the upward direction as positive. (a) By v2 = u2 + 2as, 0 = u2 + 2(–10)(200) u = 63. 2 m s–1 The velocity of the firework X is 63. 2 m s–1 when it is fired. 12 (b) By v = u + at, = 63. 2 + (–10)t t = 6. 32 s It takes 6. 32 s for the firework X to reach that height. (c) From (a) and (b), for firework Y to explode at 130 m above the ground, the speed of Y should be smaller than that of X. Therefore, Y should be fired at a (b) By v2 = u2 + 2as, v2 = 02 + 2 ? 10 ? 132 v = 51. 4 m s? 1 The speed of the vehicle before it comes to a stop is 51. 4 m s? 1.  © lower speed. (c) Take the upward direction as positive. By v = u + at, –v = v – gt 2v = gt If the stone is projected with a speed of 2v, let the new time of travel be t?. (–2v) = (2v) – gt? v t? = 4 ( ) g = 2t Its new time of travel is 2t. 6 B Take the upward direction as positive. 1 s = ut + at2 2 1 = (10)(4) + (–10)(4)2 2 = –40 m The distance between the sandbag and the ground is 40 m when it leaves the balloon. Revision exercise 2 Multiple-choice (p. 87) 1 D By v2 = u2 + 2as, 0 = 102 + 2a(25 – 10 ? 0. 2) a = –2. 17 m s–2 His minimum deceleration is 2. 17 m s–2. 2 3 D B Consider the rock released from the 2nd floor. By v2 = u2 + 2as, v2 = 2as floor. Note that s2 = 3. 5s. (v2)2 = 2as2 = 3. 5(2as) = 3. 5v2 v2 = 1. 87v (as u = 0) Then consider the rock released from the 7th 7 8 D C Take the downward direction as positive. u = 200 m s–1, v = 5 m s–1, a = ? 0 m s–2 By v = u + at, 5 = 200 + (? 20)t t = 9. 75 s The rockets should be fired for at least 9. 75 s. Both C and D satisfy this requirement. But for D, after firing for 10. 2 s, v = u + at = 200 + (–20)(10. 2) = –4 m s–1 i. e. it flies away from the Moon with 4 m s–1 upwards. It c annot land on the Moon. Therefore, the correct answer is C. 4 5 A C The stone returns to the ground with the same speed (but in opposite direction). 9 10 D D  © 11 12 13 (HKCEE 2006 Paper II Q1) (HKCEE 2007 Paper II Q2) (HKCEE 2007 Paper II Q33) (b) (i) Conventional (p. 89) 1 (a) The reaction time of the driver is 0. 6 s. (b) v a= t = 0 ? 12 3. 6 ? . 6 (1A) (Correct axes with label) from t = 1. 20 s to 1. 25 s) from t = 1. 45 s to 1. 50 s) (1A) (1A) (1A) (A straight line with slope = 0. 35 m s–1 (A straight line with slope = –0. 35 m s–1 (1A) (1M) = –4 m s–2 The acceleration of the car is –4 m s–2. (c) The stopping distance of the car is the area under graph. Stopping distance 12 ? (3. 6 ? 0. 6) =12 ? 0. 6 + 2 = 25. 2 m The stopping distance of the car is shorter than 27 m. The driver will not be charged with driving past a red light. (1A) (1A) (1M) (ii) 2 (a) The object moves away from the motion sensor with uniform velocity at 0. 35 m s–1 from t = 1. 20 s to 1. 25 s. 1A) From t = 1. 25 s to 1. 45 s, the object moves with negative acceleration. (1A) Then, from t = 1. 45 s to 1. 50 s, the object changes its moving direction and moves towards the motion sensor again with a uniform velocity of –0. 35 m s–1. (1A) (Correct axes with labels) (1A) (Correct graph with the acceleration of ? 0. 35 ? 0. 35 about 1. 40 ? 1. 30 = –7 m s–2 at t = 1. 30 s to 1. 40 s) (1A) !  © 3 (a) (b) Total displacement of the car = area bound by the v? t graph and the time axis 1 1 = (5 ? 5) ? (20 ? 3) 2 2 = ? 17. 5 m (1M) (1A) (c) Yes, the car moves 12. 5 m forwards from t = 0 to t = 5 s. Therefore, it hits the roadblock. 1A) 5 Take the upward direction as positive. (a) From point A to the highest point: (Correct axes with labels) (Correct shape of minibus’ graph) (Correct shape of sports car’s graph) (Correct values) (1A) (1A) (1A) (1A) By v2 = u2 + 2as, 0 = 42 + 2 (–10) s s = 0 . 8 m By v = u + at, 0 = 4 + (–10)t t = 0. 4 s (1M) From the highest point to the trampoline: 1 s = ut + at2 (1M) 2 1 = 0 + (–10)(1. 2 – 0. 4)2 2 = –3. 2 m (1A) 3. 2 m above the trampoline. (1A) The maximum height reached by him is (1M) (b) From the graph in (a), the two vehicles have the same velocity at t ? 2. 3 s after passing the traffic light. (1A) (1M) (c) The area under graph is the displacement of the cars. Consider their displacements at t = 3 s, For the sports car: 1 s = ? 15 ? 3 = 22. 5 m 2 For the minibus: 1 s = ? (7 + 13) ? 3 = 30 m 2 The minibus will take the lead 3 s after passing the traffic light. (1A) (b) Height of point A above the trampoline (1A) = 3. 2 – 0. 8 = 2. 4 m (1M) (1A) 6 (a) Initial velocity v = 90 km h–1 90 = m s–1 3. 6 = 25 m s–1 Thinking distance =v? t = 25 ? 0. 2 =5m The thinking distance is 5 m. (1A) (1M) 4 (a) The car moves forward with uniform acceleration at ? 1 m s? 2 from t = 0 s to t = 5 s. (1A) (1A) Then the car changes its moving direction. From t = 5 s to t = 8 s, it moves backwards with a uniform acceleration of ? 6. 67 m s . ?2 Its instantaneous velocity is 0 at t = 5 s. (1A) †  © (b) By v2 = u2 + 2as, v2 ? u2 a= 2s 2 0 ? 25 2 = 2 ? (80 ? 5) = ? 4. 17 m s–2 4. 17 m s–2. (1M) (c) The slope of the graph is the magnitude of the acceleration of the apple. speed / m s? 1 7. 75 (1A) (1A) Hence, the deceleration of the car is (c) By v2 = u2 + 2as, s= v ? u 2a 0 2 ? 25 2 = 2 ? ( ? 4. 17 ? 2) 2 2 (1M) 0 0. 775 time / s (Correct labelled axes) (2A) (1A) (Straight line with a slope of 10 m s? 2) = 37. 5 m Braking distance = 37. 5 m Stopping distance = 37. 5 + 5 = 42. m (1M) (d) The two graphs have no difference. (1A) (1A) 8 (a) Take the downward direction as positive. By v2 = u2 + 2gs, v = u + 2 gs 2 The driver could not stop before the traffic light. Therefore, his claim is incorrect. (1A) (1M) 7 (a) Take the downward direction as positive. 1 By s = ut + gt2, 2 1 3 = 0 ? t + ? 10 ? t2 2 3? 2 t= = 0. 775 s 10 (1M) = 0 2 + 2 ? 10 ? (40 ? 3) = 27. 2 m s–1 cushion is 27. 2 m s? 1. 1 (b) (i) By s = ut + gt2, 2 1 40 – 3 = 0 + ? 10 ? t2 2 t = 2. 72 s (1A) The speed of the residents landing on the (1M) (1A) The apple travels in air for 0. 775 s. (1A) (b) By v2 = u2 + 2as, v = 2 ? 10 ? 3 (1M) 1A) –1 = 7. 75 m s? 1 The speed of the apple is 7. 75 m s when the apple just reaches the ground. The time of travel in air is 2. 72 s. u+v (ii) By s = t, (1M) 2 2s t= u+v 2? 3 = t 27. 2 + 0 = 0. 221 s (1A) The time of contact is 0. 221 s.  © (c) (b) Slope of the graph from t = 0 to t = 0. 28 s 2. 3 ? 0 = 0. 28 ? 0 = 8. 21 m s–2 The acceleration of the ball due to gravity is 8. 21 m s–2. (1M) (1A) (c) (Correct labeled axes) (Correct shape) (Correct values) (1A) (1A) (1A) (i) 9 (a) t = 2 s: Displacement of the trolley = 0. 7 ? 0. 15 = 0. 55 m t = 3. 4 s: (1A) Displacement of the trolley = 1. 175 ? 0. 15 = 1. 025 m t = 4. 9 s: 1A) Displacement of the trolley = 0. 6 ? 0 . 15 = 0. 45 m (1A) (b) It moves away from the motion sensor with a changing speed from t = 2 s to t = 3. 4 s. (Correct sign) (Correct shape) (1A) (1A) (1A) (1A) (1A) (ii) The method does not work Then it rests momentarily at t = 3. 4 s. After that, it moves towards the motion since ultrasound will be reflected by the transparent plastic plate. (1A) (c) sensor with a changing speed. 1 By s = ut + at2, 2 1 ? 0. 1 = 0. 7 ? 2. 9 + ? a ? (2. 9)2 2 a = ? 0. 507 m s? 2 (1A) (1M) 11 (a) (i) The ball is held 0. 15 m from sensor before being released. The ball hits the ground which is 1. m from the sensor. (1A) (1A) Therefore, the ball drops a height of 0. 95 m. which are 0. 45 m, 0. 65 m and 0. 775 m from the sensor in its first 3 rebounds. (1A) The acceleration of the trolley is ? 0. 507 m s? 2. (ii) The ball rebounds to the positions 10 (a) The motion sensor is protruded outside the table to avoid the reflection of ultrasonic signal from table. (1A)  © At the 1st rebound, the ball rises up (1. 1 ? 0. 45) = 0. 65 m. nd The average acceleration is 66. 6 m s–2. (1A) (1A) (1A) (c) v / m s? 1 6. 32 At the 2 rebound, the ball rises up (1. 1 ? 0. 65) = 0. 45 m. rd At the 3 rebound, the ball rises up (1. 1 ? 0. 75) = 0. 325 m. (b) (i) The ball hits the ground with velocities of 3. 9 m s , 3. 25 m s and 2. 75 m s–1 in its first 3 rebounds. (3A) 3. 9 (1M) 0. 95 ? 0. 55 (1A) –1 –1 t3 t1 t2 t4 t5 t/s (ii) Acceleration = slope of graph = = 9. 75 m s–2 ?6. 32 (3 straight lines) (Correct slopes) (1A) (1A) 12 Take the downward direction as positive. 1 (a) By s = ut + gt2, (1M) 2 1 2 = 0 ? t + ? 10 ? t2 2 2? 2 t= = 0. 632 s (1A) 10 It takes 0. 632 s from t1 to t2. (Correct labels of time and velocity)(1A) 13 (a) Speed v = 70 km h–1 70 = m s–1 3. 6 = 19. 4 m s–1 d Reaction time = v 6 = 19. 4 = 0. 309 s The reaction time of the man was 0. 09 s. (1M) (b) At t2, v = u + at (1A) = 0 + 10 ? 0. 632 = 6. 32 m s –1 –1 (1 M) Shirley’s speed is 6. 32 m s when she lands on the trampoline at t2. At t4, she leaves the trampoline at the same speed. Therefore, from t3 to t4, by v2 = u2 + 2as, a= v2 ? u2 2s (? 6. 32) 2 ? 0 2 = 2 ? 0. 3 (b) By v2 = u2 + 2as, v2 ? u2 a= 2s 2 0 ? 19. 4 2 = 2 ? 48 = –3. 92 m s–2 3. 92 m s–2. (1M) (1M) (1A) The average deceleration of the car was (c) (1A) Speed v = 80 km h–1 80 = m s–1 3. 6 = 22. 2 m s–1 = 66. 6 m s–2  © Thinking distance = vt = 22. 2 ? 0. 309 = 6. 86 m By v = u + 2as, braking distance s v2 ? u2 = 2a 2 0 ? 22. 2 2 = 2 ? ? 3. 92) 2 2 (1A) Take the upward direction as positive. 1 s = ut + at2 (1M) 2 1 = 7 ? 1. 75 + ? (–10) ? 1. 752 2 = –3. 06 m (negative means the water is below the spring board) The spring board is 3. 06 m above the water. Alternative method: (1A) = 62. 9 m Therefore, the stopping distance = 6. 86 + 62. 9 = 69. 8 m (1A) Consider the upward motion and downward motion separatel y. For the upward motion, she takes 0. 7 s to reach the highest point from the spring board. Take the upward direction as positive. 1 By s = ut + at2, (1M) 2 1 s1 = 7 ? 0. 7 + ? (–10) ? 0. 72 2 = 2. 45 m For the downward motion, she takes 1. 5 s from the highest point to enter water. Take the downward direction as positive. By s = ut + 1 2 gt , 2 1 s2 = 0 + ? 10 ? 1. 052 = 5. 51 m 2 (1A) This stopping distance is greater than the initial distance between the car and the boy. (1A) Therefore, the car would have knocked down the boy if the car had travelled at 80 km h? 1 or faster. (d) A drunk has a longer reaction time. (1A) This means that the thinking distance, and thus the stopping distance (sum of thinking distance and braking distance), increases. (1A) (1M) (1A) 14 (a) Take the upward direction as positive. By v = u + at, u = 0 ? (? 10) ? 0. 7 = 7 m s–1 board is 7 m s . 1 Therefore the height of the spring board above the water = s2 – s1 = 5. 51 – 2. 4 5 = 3. 06 m (1A) (1M) (1A) The speed of Belinda leaving the spring (b) Total time taken from the spring board to the water = 0. 7 + 1. 05 = 1. 75 s (c) v = u + at = 0 + (? 10) ? 1. 05 = ? 10. 5 m s–1 is 10. 5 m s–1.  © The speed of the diver entering the water (d) Deceleration of car Y = slope of the graph during 0. 5 s? 8. 5 s = 0 ? 19. 4 = –2. 43 m s–2 8. 5 ? 0. 5 (1A) The deceleration of car Y is 2. 43 m s–2. (c) Thinking distance = area under the graph during 0? 0. 5 s = 19. 4 ? 0. 5 = 9. 7 m (1A) (Correct shape) (Correct times) (Correct velocities) 1A) (1A) (1A) Braking distance = area under the graph during 0. 5 s? 8. 5 s 1 = ? 19. 4 ? (8. 5 – 0. 5) 2 = 77. 6 m distance are 9. 7 m and 77. 6 m respectively. (1A) The thinking distance and the braking (e) (See the figure in (d). ) (Correct slope – parallel to that in (d). ) (1A) (Correct position – above that in (d). ) (1A) 15 (a) Speed 70 km h–1 70 = m s–1 3 . 6 = 19. 4 m s –1 (d) The coloured area is equal to the difference in the stopping distances travelled by cars X and Y. (1A) (e) (1M) Stopping distance of car X = area under the graph during 0? 5 s 1 = ? 19. 4 ? 5 = 48. 5 m 2 Coloured area = 9. 7 + 77. 6 – 48. = 38. 8 m < 50 m Since the difference in stopping distances of the cars is smaller than the initial separation of the cars, the two cars do not collide with each other before they stop. (1A) (1M) (1M) Distance travelled by car Y in 2 s = vt = 19. 4 ? 2 = 38. 8 m < 50 m Since the distance between the cars is greater than the distance that car Y can travel in 2 s, the driver of car Y obeys the rule. corresponding v–t graph. Deceleration of car X = slope of the graph during 0? 5 s (1A) (1M) (b) Deceleration of a car is the slope of their 0 ? 19. 4 = 5? 0 = –3. 88 m s–2 The deceleration of car X is 3. 88 m s–2. (1A) 16 a) From t = 0 s to t = 5 s, the car moves with a uniform acceleration of 17 ? 0 = 3. 4 m s–2. 5 (1A)  © From t = 5 s to t = 20 s, the car moves with a constant velocity of 17 m s–1. (1A) From t = 20 s to t = 28 s, the car moves with a uniform acceleration of 0 ? 17 = ? 2. 125 m s–2. 28 ? 20 at rest. (1A) (b) s = ut + 1 2 at 2 1 = 0 + ? 17. 5 ? (8 ? 60)2 2 = 2 016 000 m (2016 km) (1M) (1A) The Shuttle travels 2 016 000 m (2016 km) in the first 8 minutes. From t = 28 s to t = 30 s, the car remains (1A) 19 (a) (i) The cyclist is using first gear when the acceleration is greatest before braking. shortest time. (1A) (1A) (1M) (1M) (1A) b) (ii) The cyclist uses second gear for the (b) Distance travelled = area under straight line PQ (8 + 6) ? 2 = 2 = 14 m The cyclist travels 14 m in second gear. (c) The acceleration during t = 18 s? 20 s 0? 9 = (1M) 20 ? 18 = ? 4. 5 m s–2 The deceleration is 4. 5 m s . –2 (1A) (Correct shape) (Correct time instants) (Correct accelerations) (1A) (1A) (1A) (1A) (1A) 20 21 (c) Yes. (HKCEE 2 005 Paper I Q1) 1 (a) s = ut + at2 2 1 = 0 + ? 10 ? (500 ? 10? 3)2 2 = 1. 25 m Therefore the minimum height the (1M) The car changes direction at t = 30 s. Its velocity changes from positive to negative, showing a change in its travelling direction. 1A) (1M) (1A) (1A) laptop must fall for it to be ‘saved’ is 1. 25 m. (b) v = u + at = 0 + 10 ? (500 ? 10 ) = 5 m s? 1 the ground is 5 m s–1. ?3 (1M) (1A) 17 18 (HKCEE 2002 Paper I Q8) (a) v = u + at = 0 + 17. 5 ? 8 ? 60 = 8400 m s–1 minutes is 8400 m s–1. The speed of the computer when it hits The speed of the Shuttle after the first 8  © (c) Most falls are likely to be from below this height, effect. (1A) (1A) (1A) so the protection will not have taken Physics in articles (p. 96) (a) 2. 45 m (b) (i) By v2 = u2 + 2as, u = v ? 2as u2 = 0 ? 2(? 10)(2. 45 + 0. 07 ? 1. 09) u = 5. 35 m s? 1 2 2 (1A) (1M) Take the upward direction as positive. 22 (a) Any one from: Rate of change of displacement Displacement per unit time (1A) (b) The velocity of a braking car is decreasing (with time) (1A) so the car has negative acceleration. (1A) Its displacement is (still) increasing with time, so its velocity is (still) positive In this case, the acceleration and velocity are in opposite directions. (1A) (1A) (1A) The vertical speed of Javier Sotomayor is 5. 35 m s? 1 when he leaves the ground. (ii) Take the upward direction as positive. Consider the upward journey. By v = u + at, v ? u 0 ? 5. 35 t= = = 0. 54 s a ? 10 (1M) (c) i) Consider the downward journey. 1 By s = ut + at2, (1M) 2 1 ? (2. 45 + 0. 07 ? 0. 71) = 0 + (? 10) t2 2 t = 0. 60 s The time that he stays in the air = (0. 54 + 0. 60) = 1. 14 s Alternative method: (1A) (Correct graph) (1A) Take the upward direction as positive. 1 By s = ut + at2, (1M) 2 (0. 71 ? 1. 09) = 5. 35t + 1 (? 10)t 2 (1M) 2 t = 1. 14 s or t = ? 0. 07 s (rejected) (ii) Vertical distance travelled = area under the graph from 4. 0 s to 10. 0 s (70 + 130)? 6 = 2 (1M) (1A) The time that he stays in the air is 1. 14 s. = 600 m (1A) The vertical distance travelled by the rocket between t = 4. 0 s and t = 10. s is 600 m.  © 3 1 2 3 4 C C Force and Motion 6 (a) The MTR train is accelerating in the forward direction. The man tends to move at his original speed (smaller speed), so he would move backwards relative to the MTR train. (b) The MTR train is slowing down. The man tends to move at his original speed (greater speed), so he would move forwards relative to the MTR train. (c) The MTR train is moving forwards at constant velocity. The man moves forwards with the same constant velocity, so he would remain at rest relative to the MTR train. (d) The MTR train is turning a corner. The Practice 3. 1 (p. 104) (b), (e), (f) 5 a) Stretching a rubber band (b) Standing on the floor (c) Walking time (e) (f) A compass A rubbed plastic ruler attracts small bi ts of paper (d) Exists in every object on the earth at any 7 man tends to move at his original direction, so he would move outwards relative to the MTR train. In space, the gravitational force acts on the spaceship is negligible. When the rockets are shut down, they do not exert a force on the spaceship. Therefore, no net force acts on the spaceship. By Newton’s first law, the spaceship is in uniform motion and can travel far out in space. 8 Joan moves on the ice surface with a constant velocity. Practice 3. 2 (p. 111) 1 2 3 4 5 C C D C (a) No. Athletes would hit the wall of the stadium if it is too close to the finishing line. (b) The mat is used to protect the athletes if they hit the wall after passing the finishing line. Practice 3. 3 (p. 122) 1 2 3 4 5 D A B A D  © 6 (a) 7 (a) Horizontal component = 40 + 30 cos 30 ° = 66. 0 N Vertical component = 30 sin 30 ° = 15 N Resultant = 66 2 + 15 2 = 67. 7 N Let ? be the angle between the resultant Resultant’s magnitude is 67 N and the angle between the resultant and the horizontal is 13 °. (b) and the horizontal. 15 tan = ? = 12. 8 ° 66 Resultant’s magnitude is 67. N and the angle between the resultant and the horizontal is 12. 8 °. (b) Horizontal component = 40 + 30 cos 45 ° = 61. 2 N Vertical component = 30 sin 45 ° = 21. 2 N Resultant’s magnitude is 65 N and the angle between the resultant and the horizontal is 19 °. (c) Resultant = 61. 2 2 + 21. 2 2 = 64. 8 N Let ? be the angle between t he resultant and the horizontal. 21. 2 tan = ? = 19. 1 ° 61. 2 Resultant’s magnitude is 64. 8 N and the angle between the resultant and the horizontal is 19. 1 °. (c) Resultant’s magnitude is 60 N and the angle between the resultant and the horizontal is 25 °. (d) Horizontal component = 40 + 30 cos 60 ° = 55 N Vertical component = 30 sin 60 ° = 26. 0 N Resultant = 55 2 + 26. 0 2 = 60. 8 N Let ? be the angle between the resultant and the horizontal. 26. 0 ? = 25. 3 ° tan = 55 Resultant’s magnitude is 60. 8 N and the angle between the resultant and the Resultant’s magnitude is 50 N and the angle between the resultant and the horizontal is 37 °. horizontal is 25. 3 °.  © (d) Resultant = 40 2 + 30 2 = 50 N Let ? be the angle between the resultant and the horizontal. 30 tan = ? = 36. 9 ° 40 Resultant’s magnitude is 50 N and the angle between the resultant and the horizontal is 36. 9 °. Hence, the angle between the two 5-N forces is 120 °. Alternative method: By tip-to-tail method, the two 5-N forces and the resultant 5-N force form an equilateral triangle. It is known that each angle of an equilateral triangle is 60 °. Therefore, the angle between the two 5-N forces is 120 °. 8 (a) 10 (b) Resultant force = 2 ? 400 = 800 N The resultant force provided by the cable is 800 N. 11 For the 2-kg mass: (c) 9 R = weight ? cos ? = 20 cos 30 ° = 17. 3 N Suppose the two forces act in the direction as shown. T = 20 N Therefore we have: Vertical component Fx = 5 sin ? Horizontal component Fy = 5 ? 5 cos ? = 5 ? 1 ? cos ? ) (magnitude of the resultant)2 = Fx2 + Fy 2 52 = (5 sin ? )2 + [5 ? (1 ? cos ? )]2 1 = sin ? + 1 ? 2 cos ? + cos ? 2 2 2T cos 45 ° = W 2 ? 20 ? cos 45 ° = W cos ? = 0. 5 W = 28. 3 N ? = 60 °  © 12 (a) 2T sin 10 ° = 500 T = 1440 N The tension of the string is 1440 N. 3 4 5 6 B C A Net force = ma = 40 ? 0. 5 = 20 N C By v2 – u2 = 2as, 0 à ¢â‚¬â€œ u2 = 2a(20) ? u2 = 40a u2 a=? 40 Resistance = ma = 12 ? ? u2 = –0. 03u2 40 (b) Component of force = T cos 10 ° = 1440 ? cos 10 ° = 1420 N The component of the force that pulls the car is 1420 N. 13 (a) 7 8 ‘A bag of sugar weighs 10 N. ’ or ‘A bag of sugar has a mass of 1 kg. By F = ma, F 800 000 a= = = 2 m s–2 m 4 ? 10 5 (b) As the mass is stationary, the net force acting on it is zero. When it flies horizontally, its acceleration is 2 m s–2. 100 ( )? 0 v? u (a) a = = 3. 6 = 4. 63 m s–2 t 6 The acceleration of the car is 4. 63 m s–2. (c) (i) y-component of F1 = weight of mass = 10 N 9 y-component of F1 = F1 sin 30 ° F1 sin 30 ° = 10 N F1 = 20 N x-component of F1 = F1 cos 30 ° = 20 cos 30 ° = 17. 3 N (b) F = ma = 1500 ? 4. 63 = 6945 N The force provided by the car engine is 6945 N. 10 (a) (ii) y-component of F2 = 0 x-component of F2 = x-component of F1 = 17. 3 N

Andrew Jackson DBQ Essay

Jackson was a man of many faces, and many of his views were not democratic. First, Jackson was not democratic for economic reasons, such as the Bank veto. Second, Jackson was not democratic for political reasons, such as implementing the Spoils system. Third, Jackson was not democratic for social reasons, such as being pro-slavery. Jacksonian views are not democratic. First, Jackson was not democratic for political reasons. During his presidency many of his actions were viewed as tyrannical and his behavior reflected that of a king rather than of a president. One person drew a cartoon of Jackson, where he is wearing a crown, holding a scepter in his hand, and trampling on the Constitution (Doc 11). This represents that people saw Andrew Jackson as â€Å"King Andrew† because he did whatever he wanted and acted like a dictator by disobeying the Constitution. Another example was when Jackson implemented the Spoils System, which was when the President appointed his supporters with government jobs. Jackson argued that there aren’t many major qualifications necessary for government jobs and that anyone can do it (Doc 4). However, opponents of Jackson considered him a tyrant because he replaced experienced politicians with illiterate farmers who had no political experience just because they supported his campaign. Jackson was not democratic for many political reasons. Second, Jackson was not democratic for economic reasons. To start, Jackson vetoed the bill to recharter the Second Bank of the United States. He claimed that he was protecting the democracy from corruption but in reality, he feared that the bankers would campaign against him. Jackson was a tyrant who destroyed the national bank for personal issues (Doc 8) and he was quoted as saying, â€Å"The Bank is trying to kill me but I will kill it.† Next, Jackson passed the Indian Removal Act, which forced the Indians to move west. Even though the Indians did not want to leave their lands and move into unknown lands, Jackson forced them to (Doc 6). Jackson argued that the white settlers needed the land and could make better use of it and could make the land more economically productive than the Indians had been able  to. Jackson was not democratic for these economic reasons. Third, Jackson was not a democratic president for social reasons. He did not believe in equality for all people. Jackson owned a large number of slaves during his presidency (Doc 5). This shows how Jackson supported slavery and only equality when it referred to white males. Jackson also treated the Native Americans very poorly. Jackson believed that Native Americans were inferior to whites’, and that it was not necessary to treat them fairly. He believed that Native Americans were children in need of guidance (Doc 10). He helped them by â€Å"guiding† them out of their lands and sending them on the Trail of Tears in which more than 4,000 Cherokee die of cold, hunger and disease. Jackson was not a democratic president due to many social reasons.

Embrasser (to Embrace) French Verb Conjugations

Embrasser (to Embrace) French Verb Conjugations The French verb  embrasser  means to embrace or to kiss. Its resemblance to English makes it an easy one to remember and its an essential part of your French love vocabulary. When you want to say embraced or kissing, a verb conjugation is required. A quick French lesson will show you how thats done. Conjugating the French Verb  Embrasser Embrasser  is a  regular -ER verb  and it follows a very common verb conjugation pattern. The infinitive endings are just like those for similar verbs such as  admirer  (to admire),  adorer  (to adore), and countless others. This makes learning each new verb just a little easier than the last. When conjugating, we must first recognize the verb stem. In the case of  embrasser, that is  embrass-. To this, the various endings are added to match the present, future, or imperfect past tense. Yet, in French, we must also take into account the subject pronoun. For instance, I embrace is jembrasse and we will kiss is nous emrasserons. Subject Present Future Imperfect j' embrasse embrasserai embrassais tu embrasses embrasseras embrassais il embrasse embrassera embrassait nous embrassons embrasserons embrassions vous embrassez embrasserez embrassiez ils embrassent embrasseront embrassaient The Present Participle of Embrasser The  present participle  of  embrasser  is formed by adding -ant  to the verb stem to give us  embrassant.  This is rather useful as it is not only a verb, but can act as an adjective, gerund, or noun in some circumstances. The Past Participle and Passà © Composà © A  common way to express the past tense in French is the  passà © composà ©. To construct it, you must conjugate the  auxiliary verb  avoir  to fit the subject pronoun, then attach the  past participle  embrassà ©. For example, I embraced is jai embrassà © and we kissed is nous avons embrassà ©. Notice how the past participle remains the same and that  ai  and  avons  are conjugates of  avoir. More Simple Embrasser  Conjugations Among the simplest conjugations of  embrasser, French students should focus on the present, future, and past tenses at first. When youre ready, add these verb forms to your vocabulary as well. When the verbs action has some degree of uncertainty or dependency, use either the subjunctive or the conditional verb mood. In writing, the passà © simple or imperfect subjunctive may be used. Subject Subjunctive Conditional Passà © Simple Imperfect Subjunctive j' embrasse embrasserais embrassai embrassasse tu embrasses embrasserais embrassas embrassasses il embrasse embrasserait embrassa embrassà ¢t nous embrassions embrasserions embrassà ¢mes embrassassions vous embrassiez embrasseriez embrassà ¢tes embrassassiez ils embrassent embrasseraient embrassà ¨rent embrassassent ​To express  embrasser  in a direct command or request, the imperative verb form is used. In this case, the subject pronoun is not required. Keep it short and sweet with embrasse rather than tu embrasse. Imperative (tu) embrasse (nous) embrassons (vous) embrassez

Free Essays on Courtship Of Today And Of 1900

Courtship’s of the 1900 and Today. Courtship in the 1900 and today are very different. As showed in Thomas Hardy novel, Far From the Madding Crowd the courting rituals of today are far different from the rituals of the 1900’s. There were rules and rituals that were to be followed. Courting was a very delicate thing that was done with tedious care. The behavior of women was different also. The women were treated not as equals but, delicate beings, that needed to be cared for. Men’s roles in society and their behavior was different also. In this research paper, those difference will be discussed and examples will be given. Hopefully, this will enlighten us to the constant changes of courtship rituals. Men and women today find it much easier to date and even be platonic friends, than in the 1900’s. Today courtships are short, women often kiss their date good bye on the first date. An article which is entitled, â€Å"Courting rituals in 1900 Versus Courting rituals in 2000,† displays a skit type format. IT describes what would have taken place in the 1900’s and how the same situation would take place now. Today, it is common for a guy to tell a girl that he may drop by later to see her. When gifts are brought there is one for the girl and the girl’s mother. The conversations that take place between young men and women, is more candid(Unless). Not many men write or sent love letters anymore. Instead the men sent e-mails. Instead of calling cards being left a cell phone number is left instead. Electronic match makers are used. Men and women may meet at a certain area to have their date(Courting Rituals). In the 1900’s a courting call was a complicated event. One had to watch, and be sure that the was a definite and proper amount of time was between the invitation and the actual visit. In the 1900’s, the first courtship call had to be made with the girl’s mother present at... Free Essays on Courtship Of Today And Of 1900 Free Essays on Courtship Of Today And Of 1900 Courtship’s of the 1900 and Today. Courtship in the 1900 and today are very different. As showed in Thomas Hardy novel, Far From the Madding Crowd the courting rituals of today are far different from the rituals of the 1900’s. There were rules and rituals that were to be followed. Courting was a very delicate thing that was done with tedious care. The behavior of women was different also. The women were treated not as equals but, delicate beings, that needed to be cared for. Men’s roles in society and their behavior was different also. In this research paper, those difference will be discussed and examples will be given. Hopefully, this will enlighten us to the constant changes of courtship rituals. Men and women today find it much easier to date and even be platonic friends, than in the 1900’s. Today courtships are short, women often kiss their date good bye on the first date. An article which is entitled, â€Å"Courting rituals in 1900 Versus Courting rituals in 2000,† displays a skit type format. IT describes what would have taken place in the 1900’s and how the same situation would take place now. Today, it is common for a guy to tell a girl that he may drop by later to see her. When gifts are brought there is one for the girl and the girl’s mother. The conversations that take place between young men and women, is more candid(Unless). Not many men write or sent love letters anymore. Instead the men sent e-mails. Instead of calling cards being left a cell phone number is left instead. Electronic match makers are used. Men and women may meet at a certain area to have their date(Courting Rituals). In the 1900’s a courting call was a complicated event. One had to watch, and be sure that the was a definite and proper amount of time was between the invitation and the actual visit. In the 1900’s, the first courtship call had to be made with the girl’s mother present at...

Thomas Jefferson and the Louisiana Purchase

Thomas Jefferson and the Louisiana Purchase The Louisiana Purchase was one of the largest land deals in history. In 1803, the United States paid approximately $15 million dollars to France for more than 800,000 square miles of land. This land deal was arguably the greatest achievement of Thomas Jeffersons presidency, but it also posed a major philosophical problem for Jefferson.​ Thomas Jefferson, the Anti-Federalist Thomas Jefferson was strongly anti-federalist. Although he participated in the writing of the Declaration of Independence, he did not author the Constitution. Instead, the Constitution was mainly written by Federalists such as James Madison. Jefferson spoke against a strong federal government and instead advocated states rights. He feared tyranny of any kind and only recognized the need for a strong, central government in terms of foreign affairs. He was concerned that the Constitution did not address the liberties that were protected by the Bill of Rights and did not call for term limits for the president. Jeffersons philosophy regarding the role of the central government is most clearly seen when investigating his disagreement with Alexander Hamilton over the creation of a national bank. Hamilton was a staunch supporter of a strong central government. A national bank was not expressly mentioned in the Constitution, but Hamilton thought that the elastic clause (U.S. Const. art. I,  § 8, cl. 18) gave the government the power to create such a body. Jefferson completely disagreed. He held that all powers given to the national government were enumerated or expressed. If they were not expressly mentioned in the Constitution, then they were reserved to the states. Jeffersons Compromise In completing the Louisiana Purchase, Jefferson had to put aside his principles because this type of transaction was not expressly mentioned in the Constitution. Had he waited for a constitutional amendment, however, the deal might have fallen through. With the support of the American people, Jefferson decided to go through with the purchase. Jefferson needed to move quickly when he discovered that Spain had signed a secret treaty with France in 1801 ceding Louisiana to France. France suddenly posed a potential threat to America. The fear was that if America did not purchase New Orleans from France, it could lead to war. The change of ownership from Spain to France resulted in the closure of the ports warehouses to Americans, and it was feared that France would move to cut off Americas access to the port entirely. Jefferson sent envoys to France to try to secure the purchase of New Orleans. Instead, they returned with an agreement to buy the entire Louisiana Territory as Napoleon needed money for the impending war against England. Importance of the Louisiana Purchase With the purchase of this new territory, the land area of America nearly doubled. However, the exact southern and western boundaries were not defined in the purchase. America would have to work with Spain to negotiate the specific details of these boundaries. When Meriwether Lewis and William Clark led a small expeditionary group called the Corps of Discovery into the territory, this was just the beginning of Americas fascination with exploring the West. Whether or not America had a Manifest Destiny to span from sea to sea as was often the rallying cry of the early to mid-19th century, its desire to control this territory cannot be denied. Sources â€Å"Louisiana Purchase, The.†Ã‚  Monticello, Thomas Jefferson Foundation, Inc., www.monticello.org/thomas-jefferson/louisiana-lewis-clark/the-louisiana-purchase/.Mullen, Pierce. â€Å"Financing the Purchase.†Ã‚  Discovering Lewis Clark ®, Lewis Clark Fort Mandan Foundation, Lewis Clark Trail Heritage Foundation, and the National Park Service Lewis and Clark National Historic Trail, www.lewis-clark.org/article/316.

Perceptual Learning for Speech Research Paper Example | Topics and Well Written Essays - 1000 words - 1

Perceptual Learning for Speech - Research Paper Example owever, it provides the easier means of making assessment on the comparative assessment the talkers independent and the talker dependence adaptation to foreign accent speech. From a practical point of view, it would also suggest that exposure to individuals of multiple talkers to foreign accent would have a higher chance of being more effective in the enhancement of the speech communication among the natives and the non-native speakers. The results also demonstrated that the polish accented talker exposed a note-worthy limit on adaptation of listeners on speech of the foreign accent such as Chinese-accented English, and that it promoted some level of perpetual flexibility, which facilitated the recognition of some other foreign accent. This however is a gap that it is believed that some other researches need to exhaustively considers. This include whether exposure to a particular accent would be used for generalization to other typical accents such as the Spanish-accented English. Studies that attempted to reveal the efficacy of a high-variability perspective to phonemes of non natives was clearly matched with the fact that there was a need for the exposure of multiple talkers to the adaptation with the Chinese-accented English. In the study, it was also found out that the study with single talker of a Chinese accented English, regardless of the fact that the talker baseline level of intelligibility of sentence was not enough to present recognition accurately. These findings had some contrast with Weil (2001) that indicated that a single Marathi accented English talker. The difference between this study and the previous study is that this study

Personal Data Protection Assignment Example | Topics and Well Written Essays - 750 words

Personal Data Protection - Assignment Example There are indeed thousands of solutions to data security available in the technology market but still protection of personal data is very difficult. We have quite common security breaches despite having a wide assortment of technical answers such as personal firewalls, network firewalls, solutions to operating system patching, antiviruses, intrusion detection or prevention systems, anti-spyware, and security management systems. We are not yet able to protect our data because of the fact that we are not ready to take personal responsibility in protecting our data. This is because computer and network security goes beyond simple purchase of gadgets and software for data protection. Personal responsibility for the manner in which our computers are made use of and how we do take into consideration data handling processes is necessary. For us to address and ensure protection of personal data, we need to introduce institutional and behavioral changes so as to fully tackle computer security threats, reputation risks, and heightening the legislation on data security. We can only protect our personal data if we take responsibility and avoid careless practice while handling data and processes such as running accounts without passwords, a very common thing among many people (Schuste Steve, 2006, pp.140-141). If we happen to continue with this trend of not taking responsibility and thus being unable to protect our own data, then we live that to the market. However, we cannot argue that the rich will be the only people who will benefit from this move. This is because data protection is a bigger headache to the rich than it is even to the poor or average person. The richer you are, the higher the government radar is on you and the marketing radar still follows you. Huge transactions involving big funds attract attention from regulatory authorities and the taxman is on the loose to cut a good chunk from it! The vulnerability increases further because of the many interests tha t a richer person elicits from people. Cyber criminals would also want to have their cake and hence such occurrences like hacked accounts of businessmen will be on the rise. Basically, the market cannot be left to protect personal data. However, the only advantage that the rich may have could arise if they are able to take personal responsibility and add purchase of some sophisticated data protection software such as premium email services with SSL connections and encryption and security data protectors (Schuste Steve, 2006, pp.140-141). DQ2- Privacy laws: Research laws regarding privacy and data protection in your country and tell us about them. How do they compare to those in other parts of the world? The privacy law for Canada’s federal private sector is Personal Information Protection and Electronic Documents Act (PIPEDA). This is quite comprehensive and applies to personal information of Canadian people that is collected, disclosed or used by an organization (includes a partnership, association, trade union, corporation and an individual) in carrying out any form of commercial activities, within provincial or international borders of Canada. Canada has been pushed by the European community to give enough protection for personal data. In its application, this PIPEDA law stipulates that management of personal information should be practiced and implemented in a reasonable manner.

Theories and ideologies #3 Essay Example | Topics and Well Written Essays - 750 words

Theories and ideologies #3 - Essay Example The changes in both Marxism and anarchism are aimed to better the society if adopted. Capitalism has for long been the evil wheel spinning the society and has resulted to production of immense inequality both politically and socially. Capitalism leads to an economic mode of production that sees the rich continue becoming richer and the poor become poorer. The leaders of capitalism pay low wages to the laborers just enough to keep them alive but not to engage in other profit making activities that can compete with them. Meanwhile, they continue making a lot of profit and expanding their own economic empires. With economic power comes political power and hence the rich also hold and control the political power. Communism brings equality to all both economically, socially and politically. Everyone has what is necessary and even the surplus is subdivided among the people. Political power is equally shared and controlled by the people. Social classification is unknown in this society and the common theme is communal ownership hence peace prevails1. A society without individual ownership or a singular form of leadership is the ideal society. People are at liberty to own join property and be in control of the organizations and authority. There is no government to coerce people and neither is their political governance to control the people2. Humanity is at liberty to exercise their rights and aid each other as they wish. Social inequality is unknown as every property possible is shared among the people and no one owns anything. Without personal property, leadership and authority, peace prevails among the people as there is no cause for conflict. Social and economic issues are handled by the whole community in general and hence no place for political ideologies. Workers are in control of the industries and each industry is an independent entity meaning no one has control over it as an individual but rather it is a community property

Coursework3 Essay Example | Topics and Well Written Essays - 500 words

Coursework3 - Essay Example However, according to some, the U.S. benefits the most from globalization (Weber et. al.). New businesses have a much greater earning potential under globalization, as they are able to immediately reach both a potential workforce and potential customers from a much larger, global population. There is the possibility that with increased interests and partnerships in another country, this may act as a deterrent to attacking or invading that country; but the opposite scenario may also become more likely, where nations act militarily to defend their interests. The disadvantages of a global economy include corporate policies that do not take into account the best interest of developing countries they do business in. There have been many protests against globalization and its exploitation of cheap labor in third world countries. There may also be a negative effect on the environment when businesses race to obtain the cheapest materials, and are not subject to legislation and regulations overseas. The increased travel to foreign countries also increases the emission of greenhouse gases. There are also new dangers associated with globalization. A global economy that increasingly utilizes the internet can also quickly spread extremist ideologies (Weber et. al.). Greater international trade can also lead to greater distribution of illegal drugs. And the increased travel associated with globalization can speed the transmission of disease. These new dangers of globalization have become the new challenges of the post-Cold War world. Weber, Steven, Naazneen Barma, Matthew Kroenig, & Ely Ratner. â€Å"How Globalization Went Bad.† Foreign Policy. January/February 2007. Carnegie Endowment for International Peace. 15 April 2007 http://en.wikipedia.org/wiki/The_Global_Economy One of the pictures that is the most moving is the fourth picture in â€Å"The Berlin Wall: A Pictorial History.† This picture is of an East

Is the US still a global hegemonic power Essay Example | Topics and Well Written Essays - 3500 words

Is the US still a global hegemonic power - Essay Example The break-up of the Soviet regime in the late twentieth century, however, changed all that, leaving the United States in a uniquely powerful position in the world. This situation has been labelled a â€Å"global hegemony† based on the Greek word hegemon meaning leader. A hegemony demonstrates supremacy and leadership, but it also implies that there are others who more or less willingly follow this leadership and sustain the hegemony with their support. In modern times the phrase â€Å"global hegemony† the phrase has been defined with an emphasis on economics as a situation which â€Å"requires a preponderance of material resources, in terms of raw materials, sources of capital, market dominance and advantages in the production of highly valued goods.† (Kehoane, 1984, p. ) The supremacy of the United states in technology and its ability to influence international organizations such as the World Bank and the International Monetary Fund , which support capitalist fr ee market economy ideals, has helped to ensure that America maintained a hegemonic position in the mid twentieth century. Other analysts view the situation of the United States in terms of a â€Å"theory of hegemonic stability† which maintains that â€Å"the presence of a single, strongly dominant actor in international politics leads to collectively desirable outcomes for all states in the international system.† (Snidal, 1985, 579) Snidal argues that the dominance can be exercised in both coercive leadership and benevolent leadership and of course the leader can determine at any point which type to apply. There are two ways in which such a hegemonic power can decline: â€Å"the absolute decline of the dominant actor (e.g. Spain beginning in the late 16th century) or from positive but differential growth rates through which secondary powers ‘catch up’ with a former leader (e.g. the ‘decline with growth of the United States after 1960).† (Snida l, 1985, 585) It seems that in the new millennium a number of other players have finally begun to â€Å"catch up† with the United States, notably the European Union which increasingly acts in a unified strategy on international issues, and China, which is emerging as a new world economic power which has the potential to dwarf even the United States. American hegemony is now being questioned both in terms of its current ability to provide benefits for other countries lower down in the hierarchy, and in terms of its ability to sustain itself in the face of emerging competition. This paper starts from the assumption that the United States was a global hegemonic power, jointly with the U.S.S.R. from 1945 and then in its own right from the late 1980s at least. It then examines arguments which support the idea that the United States is still a global hegemonic power and arguments against. Economic, political, military and cultural factors are considered in turn, and then the argume nts are discussed, explaining why the hegemonic power of the United States is currently under threat, and concluding in the end that the United States is still a hegemonic power, but that this situation is not likely to last very much longer. 2. Arguments

Coursework3 Essay Example | Topics and Well Written Essays - 500 words

Coursework3 - Essay Example However, according to some, the U.S. benefits the most from globalization (Weber et. al.). New businesses have a much greater earning potential under globalization, as they are able to immediately reach both a potential workforce and potential customers from a much larger, global population. There is the possibility that with increased interests and partnerships in another country, this may act as a deterrent to attacking or invading that country; but the opposite scenario may also become more likely, where nations act militarily to defend their interests. The disadvantages of a global economy include corporate policies that do not take into account the best interest of developing countries they do business in. There have been many protests against globalization and its exploitation of cheap labor in third world countries. There may also be a negative effect on the environment when businesses race to obtain the cheapest materials, and are not subject to legislation and regulations overseas. The increased travel to foreign countries also increases the emission of greenhouse gases. There are also new dangers associated with globalization. A global economy that increasingly utilizes the internet can also quickly spread extremist ideologies (Weber et. al.). Greater international trade can also lead to greater distribution of illegal drugs. And the increased travel associated with globalization can speed the transmission of disease. These new dangers of globalization have become the new challenges of the post-Cold War world. Weber, Steven, Naazneen Barma, Matthew Kroenig, & Ely Ratner. â€Å"How Globalization Went Bad.† Foreign Policy. January/February 2007. Carnegie Endowment for International Peace. 15 April 2007 http://en.wikipedia.org/wiki/The_Global_Economy One of the pictures that is the most moving is the fourth picture in â€Å"The Berlin Wall: A Pictorial History.† This picture is of an East

Judicial Review- public law Essay Example | Topics and Well Written Essays - 1000 words

Judicial Review- public law - Essay Example In the Prolife case the appellate court considered the extent to which a broadcaster could curtail a PEB or Party Election Broadcast. In that particular case the BBC had conceded that it was a public authority, in a narrow sense for the specific purpose of the appeal in the House of Lords. However, it did not accept this classification in a wider context (R (ProLife Alliance) v BBC , 2004 ). The House of Lords, in their judicial review of this contention, held that the BBC had been justified in refusing to broadcast the election manifesto of an anti – abortion party, deeming its manner of presentation to be in bad taste. This decision accorded greater deference to the BBC than to a court, which was subordinate to it (Tugendhat & Christie, 2006). This issue of deference invited a significant amount of disagreement after the enactment of the Human Rights Act. Some authorities have contended that the judiciary should take cognizance of the following, while deferring to the other branches of the government. The degree to which political, economic or social issues are involved; the degree to which courts have the necessary proficiency in the matter under consideration; the nature of the rights and the extent to which these rights are afforded protection by the constitution. The manner, in which the judiciary has set about deference under the Human Rights Act, indicates the extant legal traditions. In addition, it elaborates upon the well established administrative law tenets, which state that the judiciary should abstain from supplanting the decision maker’s judgment with its own ruling. The courts are required to apply, the principle of Wednesbury irrationality, which does not require a repetition of the detailed judicial hearing into the facts of the case. Moreover, this situation is exacerbated by the inadequate constitutional law principles (Reported Decisions of

The Extent to Which Developmental Psychology Has Been Able to Contribute to Improving Children’s Lives Essay Example for Free

The Extent to Which Developmental Psychology Has Been Able to Contribute to Improving Children’s Lives Essay This essay will explore how developmental psychology has improved the lives of children diagnosed with specific learning difficulties (SpLD). It will explore how these improvements have been made from diagnosis to assessments, consequences to intervention. Dyslexia refers to a specific difficulty in learning to read and write. However this is not the only difficulty that children with dyslexia experience and there are variations of their symptoms. These problems appear to stem from fundamental difficulties in the rapid processing and sequencing of phonological information in short term memory. These children also have difficulties with associations with letters and their sounds. Learning their left from right also is difficult. In the 1970s-80s it was thought Dyslexia was a label given to rich parents underachieving children as an excuse for their poor performance. Contempory definitions of dyslexia combine a discrepancy approach with definition indicators. The discrepancy approach is key in how educational psychologists identify dyslexia. Dyspraxia is used to describe the symptoms of people who experience problems in oorganising their movements and may have problems with thought, perception and language. Dyspraxia is also known as developmental co-ordination disorder (DCD). Dyspraxia can make written work for children in school very difficult as it has a huge impact on the visual field with writing. Alongside this the mental affects a child may experience in school from being bullied for their condition may then effect their performance in the classroom. Due to late start in researching of DCD, intervention is not often attempted until a child reaches school age. Cormorbidity, where two disorders or illnesses occur in the same peron simultaneously or sequentially, often happens with dyslexia or dyspraxia. Kaplan (2001) found that children with reading difficulties were 51. 6% more likely to have another developmental difficulty. If all these conditions have a common cause then cormorbidity would not be present. Kaplin (2001) states that a combintation of learning difficulties may be a result of atypical brain development (ABD). It is possible that two people with the same atypical brain development may present with differing symptoms as a result of the influence of environmental factors. As a result it is difficult to identify a single biological cause for SpLD. Developmental psychologists have been able to identify a range of factors that appear to contribute to the causes of SpLDs. Heritability may be another factor which influences the presentation of SpLDs. Dyslexia and dyspraxia both appear to have a familial form where parents and siblings also present with these conditions. The extent of heritability has been highlighted through the use of twin studies; both monozygotic and dizygotic. Stevenson (1999) found that heritability was between 46 and 74 per cent chance, which highlights there is some influence from environment as well as genetic factors. Further research has highlighted how some genes on the chromosome are associated with phonological processing and other genes on other chromosomes are associated with reading. Assessments are a key way developmental psychologists are able to further understand children with SpLD, and can then identify and conclude the severity of the SpLD. It is through assessment that developmental psychologists can start to do the most help with improving childrens lives. By assessing them for their SpLD the psychologist can start to make way for the child to gain extra support in school and at home. Assessments for dyslexia such as those which use the discrepancy model assume that it is valid, which is not necessarily the case as there is evidence that children with very different IQ scores can achieve similar reading scores. The assessment is only a snap shot of how the child performed at that time on that particular day. Developmental psychologists have put forward a new method of assessment which would highlight the childs severe and persistent problems when learning to read and write. Such an assessment would assist the child in finding coping stratergies and different ways of learning in order for them to excel as well as a child without such a form of SpLD, it can also speed up intervention, which could allow the child to be assisted earlier on in their school career. When assessing dyspraxia psychologists it can be difficult to identify as the signs of dyspraxia overlap with other SpLD’s. Dyspraxia is often assessed and treated by medical personnel rather than psychologists as with dyslexia, despite signs and causes impacting similarly on the child education and learning abilities. It is usually due to the social impact which dyspraxia has on the child which dyslexia does not which requires medical attention. A large number of professionals are involved in aiding children with dyspraxia including educational psychologists who assess the motor and perceptual development skills such as sequencing and organisation. A DVMI or movement ABC test will be used in order to identify pecific motor skills. The consequences of living with a SpLD for a child can range from social exclusion to self esteem issues. Riddick (1996) found that children with SpLDs often experienced social exclusion; they felt excluded from activities because of their difficulties with reading and writing. Riddick also found that children who were had dyslexia were more likely to befriend other dyslexics which can aid social inclusion. Qualitative and quantitative studies have suggested that people with SpLDs experience emotional and educational consequences. Many children with a SpLD experience soxial exclusion, the self exteem of children with SpLDs is low especially with respect to academic self concept. Children with SpLDs are over represented in statistics on children with depression although the degree of prevelance is not clear. Many children with SpLDs experience reduced academic motivation. Developmental psychologists design and evaluate interventions which can aim to improve the behavioural symptoms of SpLDs. Although intervention often occurs after identification, early intervention in the case of children ‘at risk’ of SpLD is the best approach. School based interventions that aim to improve literacy attainment suggests that intervention needs to be highly personalised and structured if it is to be affective. In order to maximise the long term impact of intervention it is suggested that programmes also need to be intensive and preventative. Given the cost of implications of personalised tuition in the classroom psychologists are evaluating the potential of computers to act as teaching assistants to support children with learning difficulties.

How Indonesia Plays An Important Role In Asean Politics Essay

How Indonesia Plays An Important Role In Asean Politics Essay Indonesia is a prosperous country among the 11 countries in Southeast Asia, Indonesia is standing for the largest economy in Southeast Asia as well as the largest market to attract the investors from other regions. As you can see Indonesias condition nowadays is very great as well as prosperity. However, Indonesia has straggled many difficulties such as used to under the control of the Dutch and Japanese and war with the Dutch. On 17 August 1945, the independence of Indonesia was declared by Sukarno, but the Dutch rejected the declaration of independence, then the Dutch reoccupied Indonesia in the middle of 1946. However, the government of Indonesia treated to the reoccupation of the Dutch because young people of Indonesia received an excellent military training during the Japanese occupation. Finally the Dutch gave fully independence to Indonesia in 1949, and then Sukarno was assigned to be the first president of independent Indonesia. He introduced a new policy into the political system of Indonesia which was called Guided Democracy, then the Communist Party of Indonesia (PKI) endeavored a coup, but it was crushed in the 1965. Suharto was assigned to be the second president of Indonesia in the 1967, and he took control over the military and the government __Authoritarianism. Since there was an oil embargo in 1973, the price of the oil quadrupled. Also Indonesia was one of the worlds largest suppliers of O il, they really enjoyed gaining benefits from that time. Suharto was assigned to be the president of Indonesia for the second mandates. Until 2004 Susilo Bambang Yudhoyono is elected to be the president of Indonesia. Before the emergence of ASEAN, the Association of Southeast Asia (ASA) was formed up by Thailand, the Philippines, and the federation of Malaya with Prime Minister Rahman of Malaya was the initiator, but it failed because of the political deputes between members nations. Then on August 5 1967, Thailand, Singapore, Malaysia, Indonesia, and the Philippines gathered in Bangkok and signed on the Bangkok Declaration to declare the establishment of ASEAN. These five countries were accounted as original members of ASEAN, and the new members of ASEAN are Brunei (January 8, 1984), Vietnam (July 28, 1995), Laos (July 23, 1997), Myanmar (July 23, 1997), and Cambodia (April 30, 1999) (ASEAN-JAPAN CENTRE). Indonesia is one of the fathers of ASEAN, so how does Indonesia operate in ASEAN? Role of Indonesia in ASEAN Since ASEAN was sought on August 8, 1967, ASEAN concentrated on Indonesias regional international relations. ASEAN was created by Indonesia, Brunei, Malaysia, Singapore, Thailand and the Philippines and took place at Thailand. These countries helped to reduce intra-ASEAN conflict, organize the ASEAN positions and shape a regional multinational framework to facilitate the economic cooperation. The achievement of ASEAN singed a charter with a strong foundation for establishment of an ASEAN community and fortify ASEANs role in dealing with variety of architectural changes in the global cooperation. In the changing architectural of global cooperation and disagreement is the role and bargaining the power which can be seen in Indonesia that put into term that must be mutually agreed. The idea that establishment of the ASESAN community, Indonesia will hurt due to lack of bargaining power of economic and political. Indonesia was recognized since the collapse of new order and economic crisis was delayed in 1997. At that time, Indonesia was seen as an ineffective country in the middle of some ASEAN member countries. But later on, Indonesia began to point out its power again with the various accomplishment of reach. In the role of politics and security, Indonesia became the head country the implement democracy in a state. Indonesia was assigned clearly at the front guard of honor and human rights as well. Moreover the success of Indonesia is to implement a democratic government in order to make Indonesia as a democracy country. In the role of human rights, Indonesia is the first country in ASEAN that has a commission on human rights. In the economic role, Indonesia began to show its economic stability growth. This can be seen that Indonesia has capability to help the economic crisis better in 2008. The achievement of Indonesia in the economic was recognized by other countries. More importantly, Indonesia was assigned as one of the G-20 members. Theses success of Indonesia is a surely priceless asset to fight for Indonesias national interest, not only for ASEAN but also international public. In ASEAN, Indonesian initiated to propose the establishment of an ASEAN community that not only depends on economic cooperation, but also other parts which should be considered such as political cooperation and security and socio-cultural cooperation. In addition, Indonesia is fighting with many important elements such as enforcement of political cooperation and security and democratization and respect for human rights which were issued by the ASEAN charter. To explain the bargaining power of Indonesia in ASEAN, it was regarded as the beginning of negotiation. Indonesia proposed to include elements of human rights and democratization but these elements were protested by all ASEAN member countries. Shortly after, with a strong argument relied on the experience of democracy and respect for human rights, these element were finally interred charter (Foreign Affairs B lues.) Role in establish ASEAN As we have known that Indonesia is one of the five original countries which created ASEAN in 1967. If we look back at the history background in the case of Indonesia and Malaysia war, during 1962-1966 we can see that both countries had a conflict over the creation of Federal of Malaysia that took place on the island of Borneo which called Kalimantan Island. In this war, British meddled in the conflict of these two sides. The war was much complicated which make us hardly to believe that Indonesia agree to form a regional group with Malaysia. But later on, under Indonesia President Suharto, Indonesia eventually agree to accept the Malaysia. In addition, Indonesia agreed to shape ASEAN in meaning that Indonesia agreed to accept the establishment of Federation Malaysia and moreover; the tension between Indonesia and Malaysia war was not happened anymore in 1966. More importantly, the period of the cold war, ASEAN can break out easily owning to ideology crash. At that time, Indonesia had a crucial role to reduce this crash. Indonesia had participated with other ASEAN member countries in order to prevent the epidemic of communist and strengthen the ASEANs role become stronger. A.1. Case of Indonesia and Malaysia War The Indonesian-Malaysian confrontation happened during 1962-1966 was Indonesias political and against to the establishment of Malaysia. It is also known by Indonesian and Malaysian name Konfrontasi. The creation of Malaysia was the integration of Federation of Malaya (now west Malaysia), Singapore and British Borneo (now west Malaysia) in September 1963. The confrontation was an undeclared war which took place at the frontier area between Indonesia and East Malaysia on the island of Borneo which is known as Kalimantan in Indonesia. But Sabah and Sarawak were religious, ethnic, and political variety and there were some area which against to joint Malaysia that Indonesia attempt to exploit. Owing to the fact that terrain in Borneo was challenging and there were a few roads, both sides depend on foot soldiers and air transport. The British and Malaysian armed forces provided a main element of the effort with played by Australian army, navy air forces from combined Far East Strategic Res erve. Firstly, Indonesian overran into East Malaysia relied on local volunteers trained by Indonesian army. The crucial military forces turned to Malaysia were British yet, their first activities were unsuccessful. Then, the British reacted to increase Indonesian activities. In 1965 British began to convert operation into Indonesian Kalimantan under the code name Operation Claret. Meanwhile, Indonesia had little armed forces into west Malaysia. The time of August 1966, under Indonesia President Suhartos rise to power. Eventually, a peace agreement influenced Indonesia and then Indonesia accepted the existence of Malaysia. Role in maintain ASEAN Indonesia is a big brother of ASEAN, it responds a lot so that maintains the relationships among the members of ASEAN. Indonesia involved in the Cambodia and Thailand dispute. In case Cambodia-Thailand territory dispute, Indonesia, chairman of ASEAN, asks both parties to sit and talk in order to seek the solution. After negotiate many times, the clash still occurred and the situation still worse. Responding to this issues Indonesia had seek an agreement which Indonesia sent observers to conflict area in order to prevent fire. The problem was never solved until Cambodia asked UN for help. It showed that Indonesia failed to solve the problem. Yes, it is right Indonesia failed to solve the problem, but it is not Indonesias mistakes; It is because of the international law must respect to the state sovereignty and ASEAN as well. ASEAN is regional group and it havent enough power yet to intervene in its members conflict. In addition to the failure of solving the problem, the present of Indonesia in this dispute is really important because until the dispute end it saved many life that live along the border.This failure experience will effect positively on our future ASEAN. Participation of Indonesia in the bright future of ASEAN Indonesia can be call a big brother of ASEAN because of it population, size of territory and also located in one of the busiest trade route in the world called Malacca. Indonesia is not only a member of ASEAN, but also a member of G20 which make more voice of ASEAN in the group of rich countries submit and bring ASEAN to the high ranking group. With the membership of Indonesia, ASEAN gain more bargaining power and reputation in the international affair as well as the world politics (The Jakarta post, 2011) Another point, ASEAN goals are to create the common market in order to attract investors and promotes economic development. The strong market that can attract investors is depended much on population which is the important point. According to tradingeconomics.com Indonesia population is 242.3 million people in 2011 and it is more than one-third of the ASEAN total population which is around 600 million people. Beside population, Territory is another attracting point for investors. Infoplease.com state that Indonesia has 1,903,650 sq km that contains much resource for producing such as coal, iron, oil and so many types (The Columbia Electronic Encyclopedia, 2011). Conclusion To summary, Indonesia is seen as a big brother of ASEAN because Indonesia has the largest economy in Southeast Asia as well as it has more 240 million people, so it has a potentially huge market. If you look at the past, you might see that Indonesia had a crucial role to help countries in Southeast Asia walk away from Communism. Indonesia is not only the significant player in establishing ASEAN, but also be a meditator in negotiation of Cambodia and Thailand conflict so that prevent clashes between members and maintain the relationships among the members of ASEAN. Not only now but also in the future, Indonesia will be the one who participate the most in ASEAN prosperity.

Tips on Writing :: Literature

Tips on Writing There are many different aspects to consider when writing a paper. In order to get the reader's attention, the topic or thesis has to be of interest. Choosing a title appropriate for the essay is also important. Detail and proper structure are also important. These things combine together to make a good essay. The title of an essay is important to the way a reader views the essay. Some titles turn the reader off to the article. In the definition essay we chose, "The Value of Honesty," the title explains that the article is about honesty and that honesty is being valued. Our second essay, "Unlikely Learning," lets the reader know what the essay is about. It talks about the learning a student experiences in unexpected places. "Athenian Adventure" is a good title because the essay is full of the adventures of a day in Athens. The fourth essay we chose was a narrative, "Blue Band Emotional High." This was a good title because it explained the feeling of being chosen as a band member. We think the titles of the essays we chose were good indicators of what the essays were about. Along with capturing the reader's attention, coming up with an appropriate title and adding plenty of detail, a well-written essay has to have the proper structure. Structure consists of an introduction paragraph, several body paragraphs, and a conclusion. Examples of strong structure can be seen in "Blue Band Emotional High." In this essay, the writer uses a strong thesis sentence to build her body paragraphs upon. she writes, "The proudest moment of my life was when I became a member." The following body paragraphs go on to describe the rigorous practice, the suspense of waiting in the trampled field waiting for her name to be called, and then finally hearing it over the megaphone declaring her a member of the band. Without this kind of structure the essay wouldn't even be worth reading. All in all, structure is an extremely important element, if not the most important to good essay writing. A good piece of writing has to keep the audience interested and entertained. If it's hard to keep one's attention on writing, the reader won't fully comprehend it. It would be hard to have every reader interested in one's writing, so one should appeal to a certain audience.

Unit Outcome

Schools need to develop their policy on confidentiality (with particular reference to giving support and advice to children and young people on issues relating to sex and relationships). It is important schools have an established procedure for dealing with confidentiality, which is understood by pupils, staff, parents, careers and visitors rather than develop ad hoc arrangements in response to a crisis. The procedures need to be consistent and protect the interests of both pupils and staff.Having a policy will help to ensure there is a shared understanding of how confidentiality operates in your school community. A consistent, shared ethos and practice will help pupils, staff, parents, careers and visitors deal with ND know where they stand with confidential issues and will help you to deal with disclosure of information and establish ways of working (for example in SHE) which respect privacy and avoid unnecessary personal disclosure.This document does not suggest that all members o f the school community should offer the same levels of confidentiality. Steps need to be taken to ensure that confidential disclosures are made to the appropriate person at the appropriate time. In order to ensure this, all members of the school community need to be aware of the limits of confidentiality available in different circumstances and by different individuals.As part of a whole school policy on confidentiality schools should consider other aspects of school life where confidentiality may be pertinent, such as handling pupil data. You should also consider the professional support and supervision that teaching and non-teaching staff, including volunteers, such as mentors, need to ensure the protection, health, safety and well being of both the pupils and staff and practical considerations which require school staff to share information in the best interests of individual pupils and all pupils collectively.Human Rights Act 1998: Gives everyone the right to â€Å"respect for his private ND family life, his home and his correspondence†, unless this is overridden by the ‘public interest', e. G. For reasons of Child Protection, for the protection of public safety, public order, health or morals or for the rights and freedoms of others. Data Protection Act 1998: This applies to personal data of living, identifiable individuals, not anonymous data; manual and electronic records.Schools need to be clear, when collecting personal data, what purposes it will be used for and schools should have policies to clarify this to staff, pupils and parents. Freedom Of Information Act 2000: Amends the Data Protection Act. Gives everyone the right to request any records a public body, including schools, holds about them. A school may withhold information it has if it is considered the information may damage the recipient, if disclosed. A School's data or record keeping policy should also cover the requirements of this Act. . Children and young people particular ly can feel vulnerable about making disclosures for fear of being in trouble themselves, the repercussions of anyone else getting into trouble and fearing they might be guilty or responsible themselves. They do not always rationalist on wider issues such s the fact that problems do not always go away by themselves, their own human right to respectful treatment and are capable of not speaking and dwelling on problems and perhaps enlarging them in their own minds.