The efficiency of the engine is 30%.How much energy is supplied to the engine in 20s?
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Answer:
Efficiency in percentage is defined as:
η=
Heat energy supplied
Work Done
×100
20=
E
in
500
×100
E
in
=2500 J
Heat energy exhausted is the difference of the heat energy supplied and effective work done. Hence, heat exhausted is given by:
H=2500−500=2000 J
Explanation:
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