gasoline engine takes in 1.61×104 J of heat and delivers 3700 J of work per cycle. The heat is obtained by burning gasoline with a heat of combustion of 4.60×104 J/g. (a) What is the thermal efficiency of the engine? (b) How much heat is discarded in each cycle? (c) What mass of fuel is burned in each cycle? (d) If the engine goes through 60.0 cycles per second, what is its power output in kilowatts?

Principles of Physics: A Calculus-Based Text
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ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Raymond A. Serway, John W. Jewett
Chapter18: Heat Engines, Entropy, And The Second Law Of Thermodynamics
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3.A gasoline engine takes in 1.61×104 J of heat and delivers 3700 J of work per cycle. The heat is obtained by burning gasoline with a heat of combustion of 4.60×104 J/g.

(a) What is the thermal efficiency of the engine?

(b) How much heat is discarded in each cycle?

(c) What mass of fuel is burned in each cycle?

(d) If the engine goes through 60.0 cycles per second, what is its power output in kilowatts?

 

 

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