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12 October, 09:26

Which statement best describes why a machine is useful?

A-A machine does a greater amount of work than the amount of work that is done on it.

B-A machine does a smaller amount of work than the amount of work that is done on it.

C-A machine can decrease both the input force and the input distance needed to do a given amount of work.

D-A machine can decrease either the input force or the input distance needed to do a given amount of work.

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Answers (2)
  1. 12 October, 10:51
    0
    It is D) A machine can decrease either the input force or the input distance needed to do a given amount of work, cause I just took the quiz. Good luck on finishing the course!
  2. 12 October, 11:16
    0
    D) - A machine can decrease either the input force or the input distance needed to do a given amount of work.
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