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August 4, 2015

Homework Help: physics

Posted by physics student on Sunday, October 25, 2009 at 6:07pm.

a 715 N person walks up three flights of stairs, covering a total vertical distance of 10.5 m. (a) If, as is typical, only 20% of the caloric (food) energy is converted to work by the muscles, how many joules and food calories of energy did the person use? (1 food calorie=4186J)

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