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A heat engine receives 800 J of heat energy fro... - SS1 Physics Heat and Thermodynamics II Question

A heat engine receives 800 J of heat energy from a high-temperature source and has an efficiency of 50%. How much work is done by the engine?

Efficiency = (Work output / Heat input) x 100%

           Work output = Efficiency x Heat input

           Work output = 0.5 x 800 J = 400 J

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