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6 February, 02:27

According to the scientific definition, which is not an example of work?

A.

pushing a tack into a block of cork

B.

pulling a nail out of a piece of wood

C.

brushing teeth

D.

leaning against a large cargo crate

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Answers (1)
  1. 6 February, 02:33
    0
    The answer should be D, because there is no motion involved. Unless, of course, you are heavier than a large cargo crate.

    Work is expressed in Joules, which are Newtons times meters. Meters are a unit of distance, so if the force (in Newtons) is not producing any distance, there is no work.
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