Question: A heat engine operating between 240C and 40C achieves 25% of the maximum possible efficiency. What energy input will enable the engine to perform 7

A heat engine operating between 240C and 40C achieves 25% of the maximum possible efficiency. What energy input will enable the engine to perform 7 kJ of work? Take absolute zero to be -273C. [ Give your answer in J to the nearest 1 J ]

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