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A 64 kg hiker climbs to the top of a 3700 m-high mountain. The climb is made in 5.5 h starting at an elevation of 2900 m. Calculate the average power output in watts. Calculate the average power output in horsepower & Calculate assuming the body is 14% efficient, what rate of energy input was required. Answers should be in two significant figures. Please HELP!!!!

  • physics -

    Divide the hiker's gain in gravitatIonal potential anergy (M g H) by the elapsed time in seconds (19800).

    For the scond part, divide the first answer by 0.14.

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