A heat engine with an efficiency of 30.0% performs 2500 J of work. How much heat is discharged to the lower temperature reservoir?
A) 5830 J
B) 8330 J
C) 750 J
D) 1350 J
E) 7080 J
Answer: A
Physics & Space Science
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The greatest expansion of water among the following occurs when
A) it turns to ice. B) at 4°C it gains thermal energy. C) at 4°C it loses thermal energy. D) none of the above
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A system has a heat source supplying heat to an ideal gas at a rate of 187.0 W and the gas is doing work at a rate of 130.9 W. At what rate is the internal (thermal) energy of the gas changing?
A) 56.1 W B) 318 W C) -56.1 W D) 187 W
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A one-way mirror works because __________
Fill in the blank(s) with correct word
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During an isothermal process, 5.0 J of thermal energy via the process of heating is removed from an ideal gas. What is the work done on the gas in the process?
A) 0 J B) 5.0 J C) -5.0 J D) -10 J
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