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5 marksHeat Transfer

CAPE Physics Unit 1 · 2016 · Paper 2 · Question 6(b)

A rectangular glass window in an office building has dimensions 2.4 metres by 2 metres by 3 centimetres. The temperature of the outer surface of the window is 35 °C and the temperature of the inner surface is 26 °C. (Assume the thermal conductivity of glass is 0.96 W/m/K.)

Calculate the rate of heat conduction through the glass.

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Other parts of this question

  1. 6(a)Explain how the 'greenhouse effect' contributes to the warming of the Earth's atmosphere.[6 marks]
  2. 6(c)Determine how long it will take for the temperature of the room and its contents to increase by 3 °C.[4 marks]

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