CSEC Physics · January 2012 · Paper 2

29 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)3 marksComplete Table 1 by calculating the values of x and y.
2. 1(b)6 marksUse the results from the completed Table 1 to plot a graph of y/cm against x/cm, on the graph paper provided on page 3.
3. 1(c)5 marksFrom your graph, calculate the slope, z.
4. 1(d)1 markUse your graph to determine how far the 50 g mass needs to be placed if it balances when the plasticine was placed 27.5 cm from the pivot, R.
5. 1(e)4 marksState the Principle of Moments.
6. 1(f)(i)4 marksThe weight of the plasticine, Wp, is related to the weight of the 50 g mass, Wm, by the formula, Wp = gradient × Wm. Determine the weight of the plasticine, Wp.
7. 1(f)(ii)2 marksCalculate the mass of the plasticine, Mp. [g = 10 N kg⁻¹]
8. 2(a)(i)4 marksComplete Table 2 relating fundamental quantities and their base unit symbols.
9. 2(a)(ii)2 marksState the difference between a 'linear scale' and a 'non-linear scale'.
10. 2(a)(iii)1 markYou are provided with the following three measuring instruments: Metre rule, Clinical thermometer, Conical flask. Which of the instruments listed above has a non-linear scale?
11. 2(b)(i)4 marksIf the mass of the cement is 15 000 kg, calculate the density of this cement sample in kg m⁻³.
12. 2(b)(ii)4 marksWhat pressure, in Newtons, would the cement exert on the base of the container? [g = 10 N kg⁻¹]
13. 3(a)(i)3 marksAlbert Einstein put forward a theory that if the energy of a body changes, then its mass also changes. State the equation which relates these changes, clearly identifying the symbols or letters used in the equation.
14. 3(a)(ii)4 marksState TWO arguments EACH for and against the utilization of nuclear energy.
15. 3(b)(i)2 marksCalculate the values of A and Z.
16. 3(b)(ii)3 marksThe energy released in the given reaction is 1.8 × 10⁻¹² J. Calculate the excess mass (mass change) in this reaction.
17. 3(c)3 marksBy calculating P and Q, identify the nucleus X. [c = 3.0 × 10⁸ ms⁻¹]
18. 4(a)6 marksWith reference to the d.c. motor shown in Figure 3, explain how the coil is able to rotate continuously.
19. 4(b)(i)3 marksCalculate the period and frequency of the alternating supply.
20. 4(b)(ii)3 marksIf the resistor is 45Ω, determine the peak-to-peak voltage across the resistor.
21. 4(b)(iii)3 marksCalculate the maximum power dissipated in the resistor.
22. 5(a)(i)1 markWhat is the direction of net heat transfer between the blocks?
23. 5(a)(ii)3 marksThe final equilibrium temperature of the blocks is 52 °C. Convert this temperature to Kelvin.
24. 5(b)(i)6 marksThe energy absorbed by the solar collector is 300 kJ and 40% of this is transferred to the 2 kg of water in the copper tubing. If the initial temperature of the water is 27 °C, calculate the final temperature of the…
25. 5(b)(ii)5 marksOutline which feature of the solar water heating system shown in Figure 6 demonstrates EACH of the following thermal energy principles: a) Good absorption of heat b) Heat transfer by convection c) The green house effect…
26. 6(a)(i)2 marksWhat is the difference between 'longitudinal waves' and 'transverse waves'?
27. 6(a)(ii)4 marksGiven that red light has a wavelength of 700 × 10⁻⁹ m, calculate its frequency.
28. 6(b)(i)4 marksExplain, with reference to Figure 7, how SONAR was used to determine the depth of an oil plume.
29. 6(b)(ii)5 marksIf echoes are received 0.3 seconds after being sent, calculate the depth of the oil plume below the detector, given that Velocity = distance / time. [Speed of sound in sea water = 1450 ms⁻¹] [Speed of light in air = 3.0…