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A heat engine has a useful power output of 2,500 W and an efficiency of 23 %. The engine expels 6,900 J of exhaust energy

A heat engine has a useful power output of 2,500 W and an efficiency of 23 %. The engine expels 6,900 J of exhaust energy in each cycle.

(a) Find the energy taken in during each cycle. Give your answer in J to the nearest 1 J

(b) Find the time interval for each cycle. Give your answer in seconds to the nearest 0.001 s

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