A 53-kg mountain climber, starting from rest, climbs a vertical distance of 764 m. At the top, she is again at rest. In the process, her body generates 4.2 × 106 J of energy via metabolic processes. In fact, her body acts like a heat engine, the efficiency of which is given by Equation 15.11 as e = WI/IQHI, where |W| is the magnitude of the work she does and IQH is the magnitude of the input heat. Find her efficiency as a heat engine. e = Number i Units

A 53-kg mountain climber, starting from rest, climbs a vertical distance of 764 m. At the top, she is again at rest. In the process, her body generates 4.2 × 106 J of energy via metabolic processes. In fact, her body acts like a heat engine, the efficiency of which is given by Equation 15.11 as e = WI/IQHI, where |W| is the magnitude of the work she does and IQH is the magnitude of the input heat. Find her efficiency as a heat engine. e = Number i Units

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter15: Thermodynamics

Section: Chapter Questions

Problem 8PE: (a) How long will the energy in a 1470kJ (350kcal) cup of yogurt last in a woman doing work at the...

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