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IB09 11_9702_12/FP © UCLES 2009
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 UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS General Certificate of Education  Advanced Subsidiary Level and Advanced Level
PHYSICS
9702/12
 Paper 1 Multiple Choice
 October/November 2009 1 hour
Additional Materials: Multiple Choice Answer Sheet Soft clean eraser Soft pencil (type B or HB is recommended)
READ THESE INSTRUCTIONS FIRST
Write in soft pencil. Do not use staples, paper clips, highlighters, glue or correction fluid. Write your name, Centre number and candidate number on the Answer Sheet in the spaces provided unless this has been done for you. There are
forty
 questions on this paper. Answer
all
 questions. For each question there are four possible answers
A
,
B
,
C
 and
D
. Choose the
one
 you consider correct and record your choice in
soft pencil
 on the separate Answer Sheet.
Read the instructions on the Answer Sheet very carefully.
Each correct answer will score one mark. A mark will not be deducted for a wrong answer. Any working should be done in this booklet.
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© UCLES 2009 9702/12/O/N/09
Data
speed of light in free space,
c
= 3.00
×
 10
8
 
m
 
s
–1
 permeability of free space,
µ 
0
 = 4
π
 
×
 10
–7
 
H
 
m
–1
 permittivity of free space,
ε 
0
 = 8.85
×
 10
–12
 
F
 
m
–1
elementary charge,
e
 = 1.60
×
 10
–19
 
C the Planck constant,
h
 = 6.63
×
 10
–34
 
J
 
s unified atomic mass constant,
u
= 1.66
×
 10
–27
 
kg rest mass of electron,
m
e
= 9.11
×
 10
–31
 
kg rest mass of proton,
m
p
 = 1.67
×
 10
–27
 
kg molar gas constant,
 = 8.31
 
J
 
K
–1
 
mol
–1
 the Avogadro constant,
 A
 = 6.02
×
 10
23
 
mol
–1
 the Boltzmann constant,
 = 1.38
×
 10
–23
 
J
 
K
–1
 gravitational constant,
G
 = 6.67
×
 10
–11
 
N
 
m
2
 
kg
–2
 acceleration of free fall,
 = 9.81
 
m
 
s
–2
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© UCLES 2009 9702/12/O/N/09
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Formulae
uniformly accelerated motion,
s
 =
ut 
 +
221
at 
 
2
 =
2
 + 2
as
 work done on/by a gas,
 =
 p
 gravitational potential,
φ 
 = –
 
Gm
 hydrostatic pressure,
 p
 =
 ρ 
gh
 pressure of an ideal gas,
 p
 =
Nm
31
<
 
2
> simple harmonic motion,
a
 = –
 
ω 
 
2
 x 
 velocity of particle in s.h.m.,
 =
0
 cos
 
ω 
 
 =
±
 
ω 
 
220
  x 
 
 electric potential,
 =
Q
0
4
 ε 
π
 capacitors in series, 1
 
/
 
 = 1
 
/
 
1
 + 1
 
/
 
2
 + . . . capacitors in parallel,
 =
1
 +
2
 + . . . energy of charged capacitor,
 =
QV 
21
 
resistors in series,
 =
1
 +
2
 + . . . resistors in parallel, 1
 
/
 
 = 1
 
/
 
1
 + 1
 
/
 
2
 + . . . alternating current/voltage,
 x 
 =
 x 
0
 sin
 
ω 
 radioactive decay,
 x 
 =
 x 
0
 exp(–
λ 
) decay constant,
λ 
 =
21
0.693
 
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© UCLES 2009 9702/12/O/N/09
1
 The drag force
 acting on a moving sphere obeys an equation of the form
 =
kAv 
 
2
, where
 A
 represents the sphere’s frontal area and
 represents its speed. What are the base units of the constant
 
?
A
kg
 
m
5
 
s
–4
 
B
kg
 
m
–2
 
s
–1
 
C
kg
 
m
–3
 
D
kg
 
m
–4
 
s
2
 
2
 The graph shows two current-voltage calibration curves for a solar cell exposed to different light intensities.
3.02.01.0000.10.20.30.40.50.6voltage
 
/
 
Vcurrent
 
/
 
 Aintensity = 1000
 
W
 
m
 –2
intensity = 100
 
W
 
m
 –2
  At zero voltage, what is the ratio
2 _ 2 _ 
 
mW100atcurrent mW1000atcurrent
?
A
1.1
B
4.7
C
8.0
D
10
Space for working
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