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Chapter 14: Q21Q (page 390)
Explain why air temperature readings are always taken with the thermometer in the shade.
In the presence of direct sunlight, the thermometer's reading is higher than the normal air temperature.
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A 22掳C day is warm, while a swimming pool at 22掳C feels cool. Why?
What will be the final result when equal masses of ice at 0掳C and steam at 100掳C are mixed together?
How much heat (in joules) is required to raise the temperature of 34.0 kg of water from \(15{\rm{\circ C}}\)to \(95{\rm{\circ C}}\)
(II) Heat conduction to skin. Suppose 150 W of heat flows by conduction from the blood capillaries beneath the skin to the body鈥檚 surface area of \({\bf{1}}{\bf{.5}}\;{{\bf{m}}^{\bf{2}}}\). If the temperature difference is 0.50 C掳, estimate the average distance of capillaries below the skin surface.
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