Chapter 15: Q27CQ (page 549)
Can you cool a kitchen by leaving the refrigerator door open?
No, it is not possible to make a kitchen cool by leaving the door of a refrigerator open.
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How do heat transfer and internal energy differ? In particular, which can be stored as such in a system and which cannot?
Explain why a building made of bricks has smaller entropy than the same bricks in a disorganized pile. Do this by considering the number of ways that each could be formed (the number of microstates in each macrostate).
Can improved engineering and materials be employed in heat engines to reduce heat transfer into the environment? Can they eliminate heat transfer into the environment entirely?
A woman shuts her summer cottage up in September and returns in June. No one has entered the cottage in the meantime. Explain what she is likely to find, in terms of the second law of thermodynamics.
Which cyclical process represented by the two closed loops, ABCFA and ABDEA, on the PV diagram in the figure below produces the greatest net work? Is that process also the one with the smallest work input required to return it to point A? Explain your responses.
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