CAPE Physics Unit 1 · 2011 · Paper 1 · Question Q37

A contractor builds an office window of height 150\text{ cm} and width 200\text{ cm} which contains a glass pane of thickness 0.5\text{ cm}. The temperature difference across the glass is 15\text{ K} and the thermal conductivity of the glass is 0.65\text{ W m}^{-1}\text{ K}^{-1}. Calculate the heat energy per second conducted through the window.

1. (A)5.85\text{ J}
2. (B)585\text{ J}
3. (C)5.85\text{ kJ}
4. (D)585\text{ kJ}