A heat engine with an efficiency of 30 % does 834 J of work in each cycle. How much heat must be supplied from the high-temperature source in each cycle?

1 Answer
LM
Feb 20, 2018

#2780 J#

Explanation:

efficiency = useful energy output / total energy input

#30%# of heat supplied #= 834J#

total amount of heat supplied #= 100%# of heat supplied

total amount #= (100%)/(30%) * 834J#

#10/3 * 834 = 2780#

#10/3 * 834J = 2780J#

the energy supplied in each cycle is #2780J#.

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