Physics (AS & A Level) · May / June 2026 · Paper 13 · Question 19

A small diesel engine uses a volume of $1.5 \times 10^4\,\mathrm{cm^3}$ of fuel per hour to produce a useful power output of $40\,\mathrm{kW}$. Assume that $34\,\mathrm{kJ}$ of energy is transferred to the engine when it uses $1.0\,\mathrm{cm^3}$ of fuel. What is the rate of transfer from the engine of energy that is wasted?

1. A102 kW
2. B142 kW
3. C182 kW
4. D470 kW

As printed in the paper