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I got 15.6 but it was wrong?
Ace raised a 14.0-N physics book from a table 72 cm above the floor to a shelf, 2.20 m above the floor. What was the change in potential energy?

  • Physics -

    ΔPE = m•g•ΔH =14•(2.2-0.72) = 20.72 J

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