KillGorack / Physics 2010 / When gasoline is burned, it gives off 46 000 J/g of heat energy. If an automobile uses 13.0 kg of gasoline per hour with an efficiency of 21%, what is the average horsepower output of the engine? ( 1 hp = 746 W)

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Question When gasoline is burned, it gives off 46 000 J/g of heat energy. If an automobile uses 13.0 kg of gasoline per hour with an efficiency of 21%, what is the average horsepower output of the engine? ( 1 hp = 746 W)
Answer 47 hp

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