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The winning time for the 2005 annual race up 86 floors of the Empire state building...

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Physics

The winning time for the 2005 annual race up 86 floors of theEmpire state building was 10 min and 49 seconds. The winner's masswas 60 Kg.

A) if each floor was 3.7 m high, what was the winners change ingravitational potential energy?

B) If the efficiency in climbing stairs is 25%, what totalenergy did the winner expend during the race?

C)How many food Calories did the winner burn in the race

D) Of those calories, how may were converted to thermalenergy?

E) What was the winner's metabolic power in watts during therace up the stairs?

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