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suter [353]
3 years ago
15

An aircraft engine takes in 9000 j of heat and discards 6400 j each cycle. (a) what is the mechanical work output of the engine

during one cycle? (b) what is the thermal efficiency of the engine?
Physics
1 answer:
charle [14.2K]3 years ago
4 0
Work done = heat in - heat out 
<span>= 9000 -6400 = 3600 J per cycle. </span>

<span>And the efficiency = work out / heat in </span>
<span>= 3600/9000 </span>
<span>= 0.4 or 40%

Sorry if this does not help.</span>
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