Energy as heat when 50 kg hiker climbs 1000m mountain

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jmandas
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human energy problem!

okay...i have this assignment that's due tomorrow morning so I'm begging for some help. There is only one problem that I'm totally lost on.

A 50 kg hiker climbs a mountain 1000m high in 3 hrs. Assuming the average O2 consumption during his climb was 2x10^-3 m^3/min(2 liters/min) corresponding to an energy expenditure of 4x10^4J/min, how much energy appears as heat in the body?

:cry:
Any help would be great...Thanks so much! :smile:
 
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Calculate the total energy expenditure (Rate * climb time)

How much of this is used to overcome the potantial energy?

How much is left? What ever left should appear as heat in the body.