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4 marksThermal Measurements

CSEC Physics · 1988 · Paper 2 · Question 2(c)

The 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?

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Other parts of this question

  1. 2(a)State and explain THREE features of the design which could reduce the amount of solar radiation entering the building during the day and hence reduce cooling…[6 marks]
  2. 2(b)Explain how an air-conditioner is able to transfer thermal energy from the room to the outside, referring to the evaporation and condensation cycle shown in…[4 marks]
  3. 2(d)Architects quote the power of air-conditioning systems in 'ton' of air-conditioning, where 1 'ton' extracts the same amount of heat in 1 day as 1 ton of ice…[6 marks]

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