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7 March, 13:02

A person applies a 13.5 N force to a hammer while it moves a distance of. 12 m. The hammer completes 1.56 J of work on the nail. What is the efficiency of the hammer? Must show all work, correct sig figs, and include correct units.

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  1. 7 March, 13:08
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    =96.29%

    Explanation:

    Work efficiency is the ratio of output to input expressed as a percentage

    Work is the product of fore and distance.

    Work input = 13.5*0.12=1.62 J

    Work output = 1.56 J

    Efficiency = 1.56/1.62 * 100

    =96.29%
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