A-level PHYSICS Paper 3 Extended 0625/03

PHYSICS
Paper 3 Extended
0625/03
May/June 2006
1 hour 15 minutes
Candidates answer on the Question Paper.
No Additional Materials are required.
READ THESE INSTRUCTIONS FIRST
Write your Centre number, candidate number and name on all the work you
hand in.
Write in dark blue or black pen.
You may use a soft pencil for any diagrams, graphs or rough working.
Do not use staples, paper clips, highlighters, glue or correction fluid.
Answer all questions.
You may lose marks if you do not show your working or if you do not use
appropriate units.
Take the weight of 1 kg to be 10 N (i.e. acceleration of free fall = 10 m/s2).
DO NOT WRITE IN THE BARCODE.
DO NOT WRITE IN THE GREY AREAS BETWEEN THE PAGES.
At the end of the examination, fasten all your work securely together.
The number of marks is given in brackets [ ] at the end of each question or
part question.
For Examiner’s Use
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© UCLES 2006
1 A bus travels from one bus stop to the next. The journey has three distinct parts. Stated in
order they are
uniform acceleration from rest for 8.0 s,
uniform speed for 12 s,
non-uniform deceleration for 5.0 s.
Fig. 1.1 shows only the deceleration of the bus.
5
0
10
1 5
0 5 10 15 20 25
speed
m/s
time/s
Fig. 1.1
(a) On Fig. 1.1, complete the graph to show the first two parts of the journey. [3]
(b) Calculate the acceleration of the bus 4.0 s after leaving the first bus stop.
acceleration = ........................[2]
(c) Use the graph to estimate the distance the bus travels between 20 s and 25 s.
estimated distance = ........................[2]
(d) On leaving the second bus stop, the uniform acceleration of the bus is 1.2 m / s2. The
mass of the bus and passengers is 4000 kg.
Calculate the accelerating force that acts on the bus.
force = ........................[2]
(e) The acceleration of the bus from the second bus stop is less than that from the first bus
stop.
Suggest two reasons for this.
1. .....................................................................................................................................
.........................................................................................................................................
2. .....................................................................................................................................
.....................................................................................................................................[2]
3
0625/03/M/J/06 [Turn over
For
Examiner’s
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© UCLES 2006
2 A student sets up the apparatus shown in Fig. 2.1 in order to find the resultant of the two
tensions T1 and T2 acting at P. When the tensions T1, T2 and T3 are balanced, the angles
between T1 and the vertical and T2 and the vertical are as marked on Fig. 2.1.
vertical
board
pulley
pulley
69°
44°
P
T1 = 6.0 N T2 = 8.0 N
T3
Fig. 2.1
In the space below, draw a scale diagram of the forces T1 and T2. Use the diagram to find the
resultant of the two forces.
State
(a) the scale used, scale = ........................................
(b) the value of the resultant, value = ........................................
(c) the direction of the resultant. direction = ........................................
[6]
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© UCLES 2006
3 An electric pump is used to raise water from a well, as shown in Fig. 3.1.
pump
ground
well
Fig. 3.1
(a) The pump does work in raising the water. State an equation that could be used to
calculate the work done in raising the water.
.....................................................................................................................................[2]
(b) The water is raised through a vertical distance of 8.0 m. The weight of water raised in
5.0 s is 100 N.
(i) Calculate the work done in raising the water in this time.
work done = .......................[1]
(ii) Calculate the power the pump uses to raise the water.
power = ........................[1]
(iii) The energy transferred by the pump to the water is greater than your answer to (i).
Suggest what the additional energy is used for.
..............................................................................................................................[1]
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© UCLES 2006
4 (a) State two differences between evaporation of water and boiling of water.
1. .....................................................................................................................................
2. .................................................................................................................................[2]
(b) The specific latent heat of vaporisation of water is 2260 kJ / kg.
Explain why this energy is needed to bo