UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINA TIONS General Certificate of Education Advanced Level
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.
Y ou may u a soft pencil for any diagrams, graphs or rough working.Do not u staples, paper clips, highlighters, glue or correction fluid.DO NOT WRITE IN ANY BARCODES.
Answer all questions.马赛克艺术
Y ou may lo marks if you do not show your working or if you do not u appropriate units.
女娲补天的神话故事At the end of the examination, fasten all your work curely together.
The number of marks is given in brackets [ ] at the end of each question or
part question.
*8365187983*
PHYSICS
9702/43
Paper 4 A2 Structured Questions October/November 2010
1 hour 45 minutes
Candidates answer on the Question Paper.No Additional Materials are required.For Examiner’s U
1 2 3 4 5 6 7 8 9101112Total
Data
speed of light in free space, c = 3.00 × 108m s–1 permeability of free space, μ0= 4π × 10–7H m–1 permittivity of free space, ε0= 8.85 × 10–12F m–1 elementary charge, e = 1.60 × 10–19 C
the Planck constant, h = 6.63 × 10–34J s unified atomic mass constant, u = 1.66 × 10–27 kg
= 9.11 × 10–31 kg
rest mass of electron, m
e
= 1.67 × 10–27 kg
rest mass of proton, m
p
molar gas constant, R = 8.31 J K–1 mol–1
= 6.02 × 1023 mol–1
the Avogadro constant, N
A
the Boltzmann constant, k = 1.38 × 10–23J K–1 gravitational constant, G = 6.67 × 10–11N m2 kg–2 acceleration of free fall, g = 9.81 m s–2
© UCLES 2010
9702/43/O/N/10
9702/43/O/N/10
© UCLES 2010[Turn over
Formulae
uniformly accelerated motion, s = ut + 1皮肤干燥起皮怎么办
2at 2
v 2 = u 2 + 2as work done on/by a gas, W = p ⌬V
gravitational potential, φ = – Gm
r
hydrostatic pressure, p = ρgh pressure of an ideal gas, p = 1
3
Nm V <c 2
>simple harmonic motion, a = – ω2x
velocity of particle in , v = v 0 cos ωt
v = ± ω √⎯ (x 02 – x 2)electric potential, V =
Q
4πε0r
capacitors in ries, 1/C = 1/C 1 + 1/C 2 + . . .capacitors in parallel, C = C 1 + C 2 + . . .energy of charged capacitor, W = 1
2
Q V resistors in ries, R = R 1 + R 2 + . . .resistors in parallel, 1/R = 1/R 1 + 1/R 2 + . . .
alternating current/voltage, x = x 0 sin ωt radioactive decay, x = x 0 exp(–λt )
心态决定命运decay constant,
λ = 0.693t 1
2
9702/43/O/N/10© UCLES 2010
For Examiner’s
U
Section A
Answer
all the questions in the spaces provided.
1 A planet of mass m is in a circular orbit of radius r about the Sun of mass M, as illustrated in
Fig. 1.1.
主持稿串词Sun mass M
planet
mass m Fig. 1.1
The magnitude of the angular velocity and the period of revolution of the planet about the Sun are x and T respectively.
(a)
State
(i) what is meant by angular velocity,
..................................................................................................................................
..................................................................................................................................
(2)
人口分界线
(ii) the relation between x and T.
(1)
(b)
Show that, for a planet in a circular orbit of radius r, the period T of the orbit is given by the expression
T 2 = cr 3
where
c is a constant. Explain your working.
[4]
9702/43/O/N/10
© UCLES 2010[Turn over
For Examiner’s U
(c) Data for the planets Venus and Neptune are given in Fig. 1.2.
planet r / 108 km T / years Venus
Neptune
1.0845.0
0.615
Fig. 1.2qq帐号登录
Assume that the orbits of both planets are circular.
(i) U the expression in (b) to calculate the value of T for Neptune.
T = ....................................... years [2]
(ii) Determine the linear speed of Venus in its orbit.
speed = ..................................... km s –1 [2]
9702/43/O/N/10
© UCLES 2010For Examiner’s U
2 (a) State the basic assumptions of the kinetic theory of gas.
..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
(4)
(b) U equations for the pressure of an ideal gas to deduce that the average translational
kinetic energy <E K > of a molecule of an ideal gas is given by the expression
<E K > = T where R is the molar gas constant, N A is the Avogadro constant and T is the
thermodynamic temperature of the gas.
[3]
(c) A deuterium nucleus 2
1H and a proton collide. A nuclear reaction occurs, reprented by
使用护肤品的步骤the equation
21H + 11p
3
2He + c.
(i) State and explain whether the reaction reprents nuclear fission or nuclear
fusion.
.................................................................................................................................. .................................................................................................................................. .. (2)
32 R N A
