CAPE Physics Unit 1 · 2008 (T&T) · Paper 1 · Question Q40

The temperature inside a furnace is 627\text{ }^\circ\text{C}. At the centre of the furnace is a cube of sides 0.5\text{ m} with temperature 27\text{ }^\circ\text{C}. What is the rate of heat transfer between the furnace and the cube? The Stefan-Boltzmann constant, \sigma, is 5.67 \times 10^{-8}\text{ W m}^{-2}\text{ K}^{-4}

1. (A)11\text{ kW}
2. (B)13\text{ kW}
3. (C)55\text{ kW}
4. (D)110\text{ kW}