CAPE Physics Unit 1 · 2009 · Paper 1 · Question Q37

A large metal cube has dimensions 1.2\text{ m} \times 1.2\text{ m} \times 1.2\text{ m}. It is heated in a furnace until the blackened cube is at a temperature of 780\ ^\circ\text{C}. What is the rate of energy transfer from the surface?

1. (A)36.3\text{ kW}
2. (B)120\text{ kW}
3. (C)181\text{ kW}
4. (D)602\text{ kW}