Physics 9702/42 — May/June 2017

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

questions

100

marks

120

minutes

Topics Magnetic Fields · Electric Fields · Quantum Physics · Gravitational Fields · Ideal Gases · Thermodynamics · +6 more

Q1Gravitational FieldsFree sample

Answer all the questions in the spaces provided.

(a)

Define gravitational field strength.

(b)

The mass of a spherical comet of radius $3.6\text{ km}$ is approximately $1.0 \times 10^{13}\text{ kg}$ .

(i)

Assuming that the comet has constant density, calculate the gravitational field strength on the surface of the comet.

field strength = ______ $\text{N kg}^{-1}$

(ii)

A probe having a weight of $960\text{ N}$ on Earth lands on the comet.
Using your answer in (i), determine the weight of the probe on the surface of the comet.

weight = ______ $\text{N}$

(c)

A second comet has a length of approximately $4.5\text{ km}$ and a width of approximately $2.6\text{ km}$ . Its outline is illustrated in Fig. 1.1.

Fig. 1.1

Suggest one similarity and one difference between the gravitational fields at the surface of this comet and at the surface of the comet in (b).

similarity: ______
difference: ______

The rest of this paper

11 more questions

Q2Ideal Gases · Thermodynamics9M
Q3Oscillations · Magnetic Fields10M
Q4Medical Physics9M
Q5Communication6M
Q6Electric Fields9M
Q7Capacitance6M
Q8Electronics10M
Q9Magnetic Fields6M
Q10Quantum Physics9M
Q11Electric Fields · Quantum Physics9M
Q12Nuclear Physics10M

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