May/June 2026 Paper 13

2026 · 40 questions · 40 parts · 40 marks

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19Energy Work Power EfficiencyMedium1 mark
A small diesel engine uses a volume of cm of fuel per hour to produce a useful power output of 40 kW. Assume that 34 kJ of energy is transferred to the engine when it uses 1.0 cm of fuel.
What is the rate of transfer from the engine of energy that is wasted?