In Problems through you are given the equation(s) used to solve a problem. For each of these, you are to
a. Write a realistic problem for which this is the correct equation(s).
b. Finish the solution of the problem.
a. The temperature is and zero.
b. The temperature for given problem is .
"A Carnot engine has an efficiency of .
And operates between the temperatures and . Look for the letter ."
The temperature in degree Celsius is ,
A heat engine uses a diatomic gas that follows the cycle in FIGURE P.
a. Determine the pressure, volume, and temperature at point
b. Determine , and
for each of the three processes. Put your results in a FIGURE P table for easy reading.
c. How much work does this engine do per cycle and what is its thermal efficiency?
A heat engine using a diatomic ideal gas goes through the following closed cycle:
Isochoric cooling until the pressure is restored to its initial value. What are the thermal efficiencies of () this heat engine and
() a Carnot engine operating between the highest and lowest temperatures reached by this engine?
FIGURE CPshows two insulated compartments separated by a thin wall. The left side contains of helium at an initial temperature of and the right side contains of helium at an initial temperature of . The compartment on the right is attached to a vertical cylinder, above which the air pressure is . A -diameter, piston can slide without friction up and down the cylinder. Neither the cylinder diameter nor the volumes of the compartments are known.
a. What is the final temperature?
b. How much heat is transferred from the left side to the right side?
c. How high is the piston lifted due to this heat transfer?
d. What fraction of the heat is converted into work?
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