Imagine a special air filter placed in a
Chapter 18, Problem Q18.17(choose chapter or problem)
Imagine a special air filter placed in a window of a house. The tiny holes in the filter allow only air molecules moving faster than a certain speed to exit the house, and allow only air molecules moving slower than that speed to enter the house from outside. What effect would this filter have on the temperature inside the house? (It turns out that the second law of thermodynamicswhich we will discuss in Chapter 20tells us that such a wonderful air filter would be impossible to make.)
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