mL of water will have a mass of kg, since the density of water is kg/L.
The heat that the refrigerator will take will be to cool the water to degree celsius, then to freeze it
The total heat needed is therefore
From the definition of the coefficient of performance we can find
Substitution this to the first law for refrigerators, we get
A heat engine using a diatomic gas follows the cycle shown in FIGURE P. Its temperature at point is .
a. Determine , and for each of the three processes in this cycle. Display your results in a table.
b. What is the thermal efficiency of this heat engine?
c. What is the power output of the engine if it runs at ?
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