Help Solve Human Energy Problem - 50 kg Hiker Climbs 1000m Mountain

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To solve the human energy problem for a 50 kg hiker climbing a 1000m mountain in 3 hours, first calculate the total energy expenditure by multiplying the energy rate of 4x10^4 J/min by the total climb time of 180 minutes, resulting in 7.2x10^6 J. The potential energy gained from the climb is calculated using the formula mgh, yielding 490,000 J. Subtracting the potential energy from the total energy expenditure reveals that the remaining energy, approximately 6.71x10^6 J, is released as heat in the body. This calculation highlights the significant energy loss as heat during physical exertion. Understanding these energy dynamics is crucial for addressing the human energy problem.
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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.
 
thanks so much that worked
 

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