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An engineer does 3250 joules of work and discards 5750 joules of heat. Find the efficiency of this engine

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter15: Thermodynamics

Section: Chapter Questions

Problem 44PE: An ideal heat pump is being considered for use in heating an environment with a temperature of...

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Question

1. An engineer does 3250 joules of work and discards 5750 joules of heat. Find the efficiency of this engine.

2. A brass lid of an ordinary glass jar was stacked at 25°C. The jar was placed in water at 80°C. Find the difference in their diameters if the initial diameter of the jar is 8.00 cm.

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