CAPE Physics Unit 1 · 2001 · Paper 2

53 questions and parts from this paper. Open one to see it in full, then practise it on Quelpr and get it marked against the mark scheme.

1. 1(a)(i)1 markDescribe BRIEFLY how you would vary the radius of the circle it describes.
2. 1(a)(ii)2 marksDescribe BRIEFLY how you would find the period of rotation.
3. 1(a)(iii)1 markDescribe BRIEFLY how you would apply a constant force.
4. 1(b)(i)5 marksUse the data given in Table 1 to calculate the mass of the ball.
5. 1(b)(ii)1 markWhat conclusion can you draw from the data given in Table 1?
6. 2(a)4 marksOutline ONE method by which the wavelength of the waves generated in the ripple tank could be measured accurately.
7. 2(b)4 marksUsing the values from the table, plot a graph of frequency vs 1/wavelength on page 7.
8. 2(c)2 marksUse the graph to calculate the speed of the waves in water.
9. 3(a)(i)2 marksList TWO necessary precautions that should be taken during this experiment.
10. 3(a)(ii)1 markGive ONE source of error that will be encountered during the experiment.
11. 3(b)(i)1 markExplain why the student's first measurement was done with a load of 30 N.
12. 3(b)(ii)3 marksDetermine the Young's modulus for the wire.
13. 3(c)(i)1 markSketch the shape of the graph if the elastic limit had been reached at an extension of 6.0 mm.
14. 3(c)(ii)2 marksWhat is the work done in stretching the wire from an extension of 3.1 mm to an extension of 6.2 mm?
15. 4(a)3 marksExplain what is meant by energy and distinguish between potential energy and kinetic energy.
16. 4(b)(i)5 marksWhat do you understand by the conservation of energy? Illustrate your answer by making reference to the energy changes when a body falls to the ground.
17. 4(b)(ii)1 markHence derive an expression for the velocity of the body as it hits the ground.
18. 4(c)(i)12 marksFrom an energy consideration, calculate the work done by the engine.
19. 4(c)(ii)1 markFrom an energy consideration, calculate the driving force of the engine.
20. 4(c)(iii)1 markFrom an energy consideration, calculate the power developed by the engine at 30 m s⁻¹.
21. 5(a)(i)3 marksWhat is meant by the term Speed?
22. 5(a)(ii)1 markWhat is meant by the term Velocity?
23. 5(a)(iii)1 markWhat is meant by the term Acceleration?
24. 5(b)5 marksA body travels from rest for a time, t, and has an acceleration, a. Obtain expressions in terms of a and t for the final velocity, v, and distance travelled, s. Hence show that s = (1/2)v²/a.
25. 5(c)(i)12 marksCalculate the length of the runway.
26. 5(c)(ii)1 markCalculate the total time of take off. Hence sketch a velocity-time graph for the motion of the jet.
27. 6(a)2 marksExplain what is meant by the loudness of a sound.
28. 6(b)6 marksDescribe with the aid of diagrams the response of the ear to sound waves in terms of frequency, intensity and loudness level.
29. 6(c)(i)12 marksDetermine the positions along the line PQR where destructive interference causes the intensity to fall to zero.
30. 6(c)(ii)1 markCalculate the intensity in Wm⁻² of the sound at the point Q.
31. 7(a)2 marksExplain what is meant by mechanical resonance.
32. 7(b)6 marksDescribe TWO practical cases in which the resonance that occurs is desirable and TWO cases in which it is not. Explain how damping may be achieved in the undesirable cases.
33. 7(c)(i)12 marksDetermine, T, for a leg which is 0.9 m long, if the centre of mass is mid-way along the leg.
34. 7(c)(ii)1 markDetermine the speed of walking (in km h⁻¹) which is most effortless, if the person takes steps that are 0.8 m long.
35. 7(c)(iii)1 markCalculate the maximum acceleration of the leg during the walk.
36. 8(a)(i)4 marksList TWO factors which would affect the rate of evaporation of a liquid.
37. 8(a)(ii)1 markExplain in terms of the kinetic theory why each of these factors affects the rate of evaporation.
38. 8(b)(i)9 marksState THREE assumptions of the kinetic theory of gases which are used in the derivation of the expression above.
39. 8(b)(ii)1 markWrite down the equation of state for an ideal gas in terms of its thermodynamic temperature T, stating what each symbol represents.
40. 8(b)(iii)1 markHence, show that the average kinetic energy, Eₖ, of a molecule of an ideal gas can be written as Eₖ = (3/2)nRT, where the symbols have their usual meaning.
41. 8(c)(i)5 marksCalculate the number of moles of helium in the container.
42. 8(c)(ii)1 markCalculate the number of helium atoms in the container.
43. 8(c)(iii)1 markCalculate the average kinetic energy, Eₖ, of an atom of helium in the container.
44. 8(d)2 marksCalculate the final pressure of the gas.
45. 9(a)(i)3 marksDefine heat capacity.
46. 9(a)(ii)1 markDefine specific heat capacity.
47. 9(a)(iii)1 markDefine specific latent heat of fusion.
48. 9(b)2 marksWith what physical change is EACH quantity defined in part (a) associated.
49. 9(c)(i)6 marksDraw a diagram of an electrical circuit that is connected to the heater during the experiment.
50. 9(c)(ii)1 markUsing the data in the table above, calculate the specific heat capacity of the block.
51. 9(d)(i)6 marksCalculate the time taken to heat the ice from -10 °C to 100 °C.
52. 9(d)(ii)1 markCalculate the time taken to vaporize all the water at 100 °C.
53. 9(e)3 marksDraw a graph, with labelled axes, to show how the temperature varies with time throughout the entire heating process.