A construction worker puts 20 J of energy in to one strike of his hammer on the head of a nail. The energy transferred to driving the nail i

Question

A construction worker puts 20 J of energy in to one strike of his hammer on the head of a nail. The energy transferred to driving the nail into the wood is 8.0 J. What is the efficiency of the construction worker’s hammering? (2 sig figs and answer in a percentage)

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Hải Đăng 4 years 2021-08-09T11:46:15+00:00 1 Answers 34 views 0

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  1. nguyetanh
    0
    2021-08-09T11:47:46+00:00
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    Answer:

    The efficiency of the constuction is 9.0

    Explanation:

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