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Chapter 3: Q2DQ (page 638)
It is not correct to say that a body contains a certain amount of heat, yet a body can transfer heat to another body. How can a body give away something it does not have in the first place?
It is not correct because the notation of a body 鈥渃ontaining a certain amount of heat is nonsensical.
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Unwrapped food placed in a freezer experiences dehydration, known as 鈥渇reezer burn.鈥� Why?
Does a refrigerator full of food consume more power if the room temperature is than if it is? Or is the power consumption the same? Explain your reasoning.
If the pressure of an ideal monatomic gas is increased while the number of moles is kept constant, what happens to the average translational kinetic energy of one atom of the gas? Is it possible to change boththe volume and the pressure of an ideal gas and keep the average translational kinetic energy of the atoms constant? Explain.
A gas storage tank has a small leak. The pressure in the tank drops more quickly if the gas is hydrogen or helium than if it is oxygen. Why?
What would be the efficiency of a Carnot engine operating with ? What would be the efficiency if and were any temperature above 0K? Interpret your answers.
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