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9702/41

Physics 9702/41 — October/November 2018

Cambridge A-Level · A Level Structured Questions · worked solutions for every part, with the mark scheme

12
questions
100
marks
120
minutes

Topics Magnetic Fields · Quantum Physics · Nuclear Physics · Gravitational Fields · Thermodynamics · Oscillations · +4 more

Q1Gravitational FieldsFree sample

Answer all the questions in the spaces provided.

(a)
(i)

State what is meant by gravitational potential at a point.

2M
(ii)

Suggest why, for small changes in height near the Earth’s surface, gravitational potential is approximately constant.

2M
(b)

The Moon may be considered to be a uniform sphere with a diameter of 3.5×103 km3.5 \times 10^{3}\ \text{km} and a mass of 7.4×1022 kg7.4 \times 10^{22}\ \text{kg}.

A meteor strikes the Moon and, during the collision, a rock is sent off from the surface of the Moon with an initial speed vv.

Assuming that the Moon is isolated in space, determine the minimum speed of the rock such that it does not return to the Moon’s surface. Explain your working.

minimum speed = ______ m s−1\text{m s}^{-1}

3M

The rest of this paper

11 more questions
  • Q2Thermodynamics9M
  • Q3Oscillations7M
  • Q4Medical Physics10M
  • Q5Communication8M
  • Q6Electric Fields9M
  • Q7Electronics8M
  • Q8Magnetic Fields9M
  • Q9Magnetic Fields8M
  • Q10Quantum Physics5M
  • Q11Quantum Physics · Nuclear Physics9M
  • Q12Nuclear Physics11M
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