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11 October, 21:36

What's the efficiency of a car that uses 400,000 J of energy from gasoline to make 48,000 J of kinetic

energy?

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  1. 11 October, 22:12
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    To calculate efficiency you should divide output by input energy.

    The engine produces 48000 j energy from 400000 j given energy from gasoline.

    48 000/400 000 = 48/400 = 12/100 = 12%

    Efficiency of this engine is 12%
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