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8) One of the most efficient engines built so far has the following characteristics: The combustion chamber temperature is 1900°C, the exhaust temperature = 430°C, 7.0 × 10° cal of fuel produces 1.4 x 10° J of work in one hour. (1 cal = 4.186 J) (a) What is the actual efficiency of this engine? calc nona (b) What would be the maximum possible efficiency for an engine using the same temperature extremes?

8) One of the most efficient engines built so far has the following characteristics: The combustion chamber temperature is 1900°C, the exhaust temperature = 430°C, 7.0 × 10° cal of fuel produces 1.4 x 10° J of work in one hour. (1 cal = 4.186 J) (a) What is the actual efficiency of this engine? calc nona (b) What would be the maximum possible efficiency for an engine using the same temperature extremes?

College Physics
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
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8) One of the most efficient engines built so far has the following characteristics: The combustion chamber temperature is 1900°C, the exhaust temperature = 430°C, 7.0 × 10° cal of fuel produces 1.4 x 10° J of work in one hour. (1 cal =4.186 J) (a) What is the actual efficiency of this engine? 1D A calcular no (b) What would be the maximum possible efficiency for an engine using the same temperature extremes?
Transcribed Image Text:8) One of the most efficient engines built so far has the following characteristics: The combustion chamber temperature is 1900°C, the exhaust temperature = 430°C, 7.0 × 10° cal of fuel produces 1.4 x 10° J of work in one hour. (1 cal =4.186 J) (a) What is the actual efficiency of this engine? 1D A calcular no (b) What would be the maximum possible efficiency for an engine using the same temperature extremes?
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