9702 s10 QP 22
9702 s10 QP 22
9702 s10 QP 22
PHYSICS 9702/22
Paper 2 AS Structured Questions May/June 2010
1 hour
Candidates answer on the Question Paper.
No Additional Materials are required.
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.
DO NOT WRITE IN ANY BARCODES.
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
For Examiners Use
part question.
1
Total
DC (LEO/DJ) 17382/3
UCLES 2010 [Turn over
2
Data
Formulae
gravitational potential, = Gm
r
hydrostatic pressure, p = gh
1 Nm 2
pressure of an ideal gas, p= 3 <c >
V
simple harmonic motion, a = 2x
Q
electric potential, V=
40r
capacitors in parallel, C = C1 + C2 + . . .
resistors in series, R = R1 + R2 + . . .
BLANK PAGE
(a) State what instrument should be used to measure the diameter of the wire.
...................................................................................................................................... [1]
..................................................................................................................................
.............................................................................................................................. [1]
..................................................................................................................................
..................................................................................................................................
.............................................................................................................................. [2]
2 (a) The distance s moved by an object in time t may be given by the expression For
Examiners
s = 1 at 2 Use
2
State two conditions for this expression to apply to the motion of the object.
1. ......................................................................................................................................
..........................................................................................................................................
2. ......................................................................................................................................
..........................................................................................................................................
[2]
(b) A student takes a photograph of a steel ball of radius 5.0 cm as it falls from rest. The
image of the ball is blurred, as illustrated in Fig. 2.1.
The image is blurred because the ball is moving while the photograph is being taken.
initial position
of ball in photograph 80
cm
final position 90
of ball in photograph cm
100
cm
Fig. 2.1
The scale shows the distance fallen from rest by the ball. At time t = 0, the top of the ball
is level with the zero mark on the scale. Air resistance is negligible.
(c) The student in (b) takes a second photograph starting at the same position on the scale.
The ball has the same radius but is less dense, so that air resistance is not negligible.
State and explain the changes that will occur in the photograph.
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
...................................................................................................................................... [2]
.............................................................................................................................. [1]
..................................................................................................................................
..................................................................................................................................
..................................................................................................................................
.............................................................................................................................. [3]
(b) Two spheres approach one another along a line joining their centres, as illustrated in
Fig. 3.1.
sphere sphere
A B
Fig. 3.1
When they collide, the average force acting on sphere A is FA and the average force
acting on sphere B is FB.
1. FA and FB,
.............................................................................................................................. [1]
2. tA and tB.
.............................................................................................................................. [1]
(ii) Use your answers in (i) to show that the change in momentum of sphere A is equal
in magnitude and opposite in direction to the change in momentum of sphere B.
..................................................................................................................................
.............................................................................................................................. [1]
(c) For the spheres in (b), the variation with time of the momentum of sphere A before, For
during and after the collision with sphere B is shown in Fig. 3.2. Examiners
Use
15
momentum
to right / N s
10
sphere A
5
0
time
sphere B
-5
5
-10
10
-15
15
Fig. 3.2
The momentum of sphere B before the collision is also shown on Fig. 3.2.
Complete Fig. 3.2 to show the variation with time of the momentum of sphere B during
and after the collision with sphere A. [3]
4 (a) State two features of a stationary wave that distinguish it from a progressive wave. For
Examiners
1. ...................................................................................................................................... Use
..........................................................................................................................................
2. ......................................................................................................................................
..........................................................................................................................................
[2]
(b) A long tube is open at one end. It is closed at the other end by means of a piston that
can be moved along the tube, as shown in Fig. 4.1.
tube
piston
loudspeaker
L
Fig. 4.1
A loudspeaker producing sound of frequency 550 Hz is held near the open end of the
tube.
The piston is moved along the tube and a loud sound is heard when the distance L
between the piston and the open end of the tube is 45 cm.
The speed of sound in the tube is 330 m s1.
(i) Show that the wavelength of the sound in the tube is 60 cm.
[1]
(ii) On Fig. 4.1, mark all the positions along the tube of
(c) The frequency of the sound produced by the loudspeaker in (b) is gradually reduced. For
Examiners
Determine the lowest frequency at which a loud sound will be produced in the tube of Use
length L = 45 cm.
5 (a) Tensile forces are applied to opposite ends of a copper rod so that the rod is stretched. For
The variation with stress of the strain of the rod is shown in Fig. 5.1. Examiners
Use
2.5
stress / 108 Pa
2.0
1.5
1.0
0.5
0
0 1.0 2.0 3.0 4.0 5.0
strain / 103
Fig. 5.1
(ii) On Fig. 5.1, sketch a line to show the variation with stress of the strain of the rod as
the stress is reduced from 2.5 106 Pa to zero. No further calculations are expected.
[1]
(b) The walls of the tyres on a car are made of a rubber compound. For
The variation with stress of the strain of a specimen of this rubber compound is shown Examiners
in Fig. 5.2. Use
stress
0
0 strain
Fig. 5.2
As the car moves, the walls of the tyres bend and straighten continuously.
Use Fig. 5.2 to explain why the walls of the tyres become warm.
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
...................................................................................................................................... [3]
(b) A uniform wire AB of length 100 cm is connected between the terminals of a cell of
e.m.f. 1.5 V and negligible internal resistance, as shown in Fig. 6.1.
1.5 V
100 cm
C
A B
L
5.0
A
Fig. 6.1
(i) at A,
(ii) at B. For
Examiners
Use
(c) Using the circuit in (b), the ammeter reading I is recorded for different distances L of the
contact C from end A of the wire. Some data points are shown on Fig. 6.2.
0.4
I/A
0.3
0.2
0.1
0
0 20 40 60 80 100
L / cm
Fig. 6.2
(i) Use your answers in (b) to plot data points on Fig. 6.2 corresponding to the
contact C placed at end A and at end B of the wire. [1]
(ii) Draw a line of best fit for all of the data points and hence determine the ammeter
reading for contact C placed at the midpoint of the wire.
(iii) Use your answer in (ii) to calculate the potential difference between A and the For
contact C for the contact placed at the midpoint of AB. Examiners
Use
(d) Explain why, although the contact C is at the midpoint of wire AB, the answer in (c)(iii) is
not numerically equal to one half of the e.m.f. of the cell.
..........................................................................................................................................
..........................................................................................................................................
...................................................................................................................................... [2]
7 (a) The radioactive decay of some nuclei gives rise to the emission of -particles. For
State Examiners
Use
.............................................................................................................................. [1]
1. ...............................................................................................................................
..................................................................................................................................
2. ...............................................................................................................................
..................................................................................................................................
[2]
(b) One possible nuclear reaction involves the bombardment of a stationary nitrogen-14
nucleus by an -particle to form oxygen-17 and another particle.
14 ...... 17
7
N + 8
O + ................. [2]
......
(ii) The total mass-energy of the nitrogen-14 nucleus and the -particle is less than
that of the particles resulting from the reaction. This mass-energy difference
is 1.1 MeV.
.............................................................................................................................
......................................................................................................................... [1]
BLANK PAGE
BLANK PAGE
BLANK PAGE
Permission to reproduce items where third-party owned material protected by copyright is included has been sought and cleared where possible. Every
reasonable effort has been made by the publisher (UCLES) to trace copyright holders, but if any items requiring clearance have unwittingly been included, the
publisher will be pleased to make amends at the earliest possible opportunity.
University of Cambridge International Examinations is part of the Cambridge Assessment Group. Cambridge Assessment is the brand name of University of
Cambridge Local Examinations Syndicate (UCLES), which is itself a department of the University of Cambridge.