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Thermal Measurements · CSEC Physics

44 past-paper questions on Thermal Measurements, part of Thermal Physics and Kinetic Theory, from every CSEC Physics paper on Quelpr.

Practise Thermal Measurements
  1. 2(c)4 marks· CSEC Physics · 1988 · Paper 2The heat capacity of a room is 3 × 10⁴ J K⁻¹. The room is cooled by an air-conditioner extracting heat at a rate of 500 W. By how much will the temperature of the room fall in five minutes?
  2. 3(b)(ii)3 marks· CSEC Physics · 1989 · Paper 2Each of the four brake drums has a mass of 2.5 kg. Find the rise in temperature which occurs when the car is brought to rest. [Specific heat capacity of iron = 450 J kg^-1 K^-1.]
  3. 1(c)5 marks· CSEC Physics · 1991 · Paper 2Given the refrigerator volume of 0.40 m³, air density of 1.29 kg m⁻³, specific heat capacity of air of 600 J kg⁻¹ K⁻¹, and 1 kW h = 3.6 × 10⁶ J, calculate the electrical energy in kilowatt-hours needed to cool the air…
  4. 1(c)(ii)3 marks· CSEC Physics · 1992 · Paper 2Calculate how much energy is required to raise the temperature of the melted ice to 15 °C. (Specific heat capacity of water = 4.2 x 10^3 J kg^-1 K^-1)
  5. 1(c)(iii)4 marks· CSEC Physics · 1992 · Paper 2Some water at 30 °C is added to 0.30 kg of ice at 0 °C. The ice melts and the final temperature of all the water is 15 °C. Use your answers to (i) and (ii) above to determine the mass of water added.
  6. 2(a)(i)2 marks· CSEC Physics · 1993 · Paper 2Define 'specific heat capacity'.
  7. 2(b)(iii)3 marks· CSEC Physics · 1993 · Paper 2A nearby river is used to absorb the waste heat. A mass of 6 x 10^4 kg of water passes the power station every second. What is the temperature rise of the water if it absorbs all the waste heat? [Specific heat capacity…
  8. 1(a)3 marks· Physics Q1 1(a)Complete the table above.
  9. 1(d)1 mark· Physics Q1 1(d)Assuming that the energy loss to the container and the surroundings is negligible, what physical quantity does this gradient represent?
  10. 1(d)4 marks· Physics Q1 1(d)Use the value of the slope S, calculated in 1 (b) on page 4, to determine the specific heat capacity of the liquid in the units Jg⁻¹k⁻¹. Assume there is negligible heat transferred to or from the container holding the…
  11. 1(e)2 marks· Physics Q1 1(e)Determine the value of this quantity if 1 kg of water were used and state the physical quantity this represents.
  12. 1(e)8 marks· Physics Q1 1(e)If 15 g of the substance was cooled from 90.0°C to 57.5°C, calculate the heat, in kilojoules, which was lost in this activity. [Specific Heat Capacity of Substance = 1763 Jkg⁻¹ K⁻¹ ] [Specific Latent Heat of Fusion of…
  13. 2(a)(i)2 marks· Physics Q2 2(a)(i)Define the term 'specific heat capacity' of an object.
  14. 2(a)(i)1 mark· Physics Q2 2(a)(i)In the box below, state the equation that relates C to c.
  15. 2(a)(ii)2 marks· Physics Q2 2(a)(ii)State the name of the physical quantity that each letter represents. C: c:
  16. 2(a)(ii)2 marks· Physics Q2 2(a)(ii)Define the term 'heat capacity of a substance'.
  17. 2(a)(ii)2 marks· Physics Q2 2(a)(ii)Complete Table 3 below by inserting the correct symbol and SI Unit which relate to the quantity shown in Column 1.
  18. 2(a)(iii)1 mark· Physics Q2 2(a)(iii)Write the equation that relates specific heat capacity with heat capacity.
  19. 2(a)(iii)2 marks· Physics Q2 2(a)(iii)Distinguish between 'C' and 'c'.
  20. 2(b)(i)3 marks· Physics Q2 2(b)(i)Calculate the energy required to heat the water to 100 °C.
  21. 2(c)(i)4 marks· Physics Q2 2(c)(i)to heat the water to 100 °C
  22. 3(a)3 marks· Physics Q3 3(a)Define the 'heat capacity of a substance' and state its SI unit.
  23. 3(a)6 marks· Physics Q3 3(a)State, in words, the quantity EACH symbol represents in the equation E_H = mcΔθ. State the SI unit of EACH quantity as well. E_H: c: Δθ:
  24. 3(a)(i)2 marks· Physics Q3 3(a)(i)Define the term 'heat capacity'.
  25. 3(b)(i)3 marks· Physics Q3 3(b)(i)Calculate the specific heat capacity of the water. [Acceleration due to gravity, g = 10.0 m s⁻²]
  26. 3(b)(ii)2 marks· Physics Q3 3(b)(ii)If the waterfall was twice as tall, determine by how much the water temperature would change from its initial value.
  27. 3(c)3 marks· Physics Q3 3(c)If the mass of water in the kettle is 1.5 kg, calculate the thermal energy required to raise its temperature from 30 °C to 100 °C.
  28. 3(c)(i)3 marks· Physics Q3 3(c)(i)Calculate the heat lost by the water.
  29. 3(c)(i)4 marks· Physics Q3 3(c)(i)Calculate the amount of energy needed to heat the water from 30 °C to 100 °C.
  30. 3(c)(ii)3 marks· Physics Q3 3(c)(ii)Calculate the heat energy supplied to the water, given that its temperature increases to 58°C. [specific heat capacity of water is 4200 J kg⁻¹ K⁻¹]
  31. 3(c)(iii)3 marks· Physics Q3 3(c)(iii)Calculate the heat capacity of the tank, assuming that the tank and the water reach the same final temperature of 58°C.
  32. 3(e)2 marks· Physics Q3 3(e)Explain why it is better not to fill the kettle when making one or two cups of tea.
  33. 4(a)(i)5 marks· Physics Q4 4(a)(i)Define each of the following terms: Specific heat capacity; Heat capacity.
  34. 4(a)(ii)1 mark· Physics Q4 4(a)(ii)Write the formula to show the relationship between the specific heat capacity, c, and heat capacity, C, of a body.
  35. 4(b)9 marks· Physics Q4 4(b)Using the data on page 14, calculate the specific heat capacity of the metal, stating any assumption(s) made.
  36. 4(b)(ii)3 marks· Physics Q4 4(b)(ii)Calculate the heat lost by the water.
  37. 4(b)(iv)3 marks· Physics Q4 4(b)(iv)What mass of water can the glazed collector heat from 25°C to 55°C during the day?
  38. 5(a)6 marks· Physics Q5 5(a)Describe the method used by this group to determine the specific heat capacity of the metal block.
  39. 5(b)(i)6 marks· Physics Q5 5(b)(i)Assuming that no heat was lost and ignoring the heat capacity of the container, determine the value of the specific heat capacity of the liquid.
  40. 5(b)(i)6 marks· Physics Q5 5(b)(i)The 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…
  41. 5(b)(ii)1 mark· Physics Q5 5(b)(ii)If the liquid was heated twice as long, what impact, if any, would this have on the specific heat capacity of the liquid?
  42. 5(b)(iii)2 marks· Physics Q5 5(b)(iii)Justify your response in part (ii).
  43. 6(a)6 marks· Physics Q6 6(a)The method of mixtures is used to determine the specific heat capacity of liquids and solids by experiment. Describe the procedure, the measurements to be taken and the use of these measurements to obtain the result in…
  44. 6(b)6 marks· Physics Q6 6(b)Find the amount of heat removed each day by the quantity of urine. [Assume the specific heat capacity of urine = specific heat capacity of water = 4200 J kg⁻¹ K⁻¹, density of urine = density of water = 1000 kg m⁻³]

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