A thermal engine absorbs 1500 J of heat from a gas at a temperature of 250°K and discards 1200 J of heat as exhaust in each cycle. The temperature of the exhaust is 120° K. a) What is the mechanical work performed by the engine in each cycle? b) What is the thermal efficiency of the engine? c) What is the change in the internal energy of the engine in one cycle? d) What is the maximum efficiency that could be achieved for this particular engine? How does it compare with the actual efficiency of the engine?

A thermal engine absorbs 1500 J of heat from a gas at a temperature of 250°K and discards 1200 J of heat as exhaust in each cycle. The temperature of the exhaust is 120° K. a) What is the mechanical work performed by the engine in each cycle? b) What is the thermal efficiency of the engine? c) What is the change in the internal energy of the engine in one cycle? d) What is the maximum efficiency that could be achieved for this particular engine? How does it compare with the actual efficiency of the engine?

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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