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24 February, 19:25

If an automobile engine delivers 42.0 hp of power, how much time will it take for the engine to do 6.20 â 105 j of work? (hint: note that one horsepower, 1 hp, is equal to 746 watts.)

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  1. 24 February, 19:55
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    To be able to answer this item, we are to calculate the power that the machine could deliver from hp to kW.

    (45 hp) (746 W/1 hp) = 33570 W

    Power is the amount of energy delivered at a certain period.

    t = (6.20 x 10^2 J) / (33570 kJ/s)

    t = 0.01845 s
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