Chapter 3: Q6DQ (page 573)
Why is it sometimes possible to loosen caps on screw-top bottles by dipping the capped bottle briefly into hot water?
Due to the difference in volume expansion, the caps get to loosen up.
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A rigid, perfectly insulated container has a membrane dividing its volume in half. One side contains a gas at an absolute temperature and pressure , while the other half is completely empty. Suddenly a small hole develops in the membrane, allowing the gas to leak out into the other half until it eventually occupies twice its original volume. In terms of and , what will be the new temperature and pressure of the gas when it is distributed equally in both halves of the container? Explain your reasoning.
In the ideal-gas equation, could an equivalent Celsius temperature be used instead of the Kelvin one if an appropriate numerical value of the constant Ris used? Why or why not?
A system is taken from state a to state b along the three paths shown in Fig. Q19.23. (a) Along which path is the work done by the system the greatest? The least? (b) If , along which path is the absolute value of the heat transfer, , the greatest? For this path, is heat absorbed or liberated by the system? Explain
In some household air conditioners used in dry climates, air is cooled by blowing it through a water-soaked filter, evaporating some of the water. How does this cool the air? Would such a system work well in a high-humidity climate? Why or why not?
When a car is driven some distance, the air pressure in the tires increases. Why? Should you let out some air to reduce the pressure? Why or why not?
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