The heat engine per cycle receives from the heater the amount of heat 100 J
| June 19, 2021 | education
The heat engine per cycle receives from the heater the amount of heat 100 J and gives the refrigerator 75 J. What is the efficiency of the machine.
Given:
Q1 = 100 J;
Q2 = 75 J;
Efficiency -?
Decision:
heat engine efficiency formula:
Efficiency = (Q1 – Q2) / Q1 * 100%;
Efficiency = (100 – 75) / 100 * 100 = 25/100 * 100 = 25%.
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