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6 marksThermal Properties

CAPE Physics Unit 1 · 2001 · Paper 2 · Question 9(c)(i)

A student determines the specific heat capacity of a block (Figure 3) using an electrical method. Available equipment includes a variable 15 V supply, immersion heater, voltmeter, ammeter, top-pan balance, thermometer, and stopwatch. The heater heats the block for a fixed time. Results are given in a table: Mass of block/kg = 0.995, P.d across heater/V = 13.2, Current supplied to heater/A = 3.35, Initial temperature of block/°C = 31.0, Final temperature of block/°C = 65.0, Heating time/s = 300.

Draw a diagram of an electrical circuit that is connected to the heater during the experiment.

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Other parts of this question

  1. 9(a)(i)Define heat capacity.[3 marks]
  2. 9(a)(ii)Define specific heat capacity.[1 mark]
  3. 9(a)(iii)Define specific latent heat of fusion.[1 mark]
  4. 9(b)With what physical change is EACH quantity defined in part (a) associated.[2 marks]
  5. 9(c)(ii)Using the data in the table above, calculate the specific heat capacity of the block.[1 mark]
  6. 9(d)(i)Calculate the time taken to heat the ice from -10 °C to 100 °C.[6 marks]
  7. 9(d)(ii)Calculate the time taken to vaporize all the water at 100 °C.[1 mark]
  8. 9(e)Draw a graph, with labelled axes, to show how the temperature varies with time throughout the entire heating process.[3 marks]

More practice: the rest of this paper · more Thermal Properties questions · all CAPE Physics Unit 1 past papers