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25 December, 10:22

A 3.8 kg object is lifted 12 meters. Approximately how much work is performed during the lifting?

A. 45.6 J

B. 372.4 J

C. 588 J

D. 446.9 J

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Answers (1)
  1. 25 December, 10:32
    0
    Well first you have to use the formula U=mgh, U being pontential energy, m being mass, g being gravity (9.8m/s^2 on earth), and h being height. so you plug them in. U = (3.8 kg) (9.8 m/s^2) (12 m) = 446.9 J. So your answer is D. 446.9 J
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Home » Mathematics » A 3.8 kg object is lifted 12 meters. Approximately how much work is performed during the lifting? A. 45.6 J B. 372.4 J C. 588 J D. 446.9 J
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