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Chapter 14: Q9CQ (page 500)
If you place 0oCice into 0oC water in an insulated container, what will happen? Will some ice melt, will more water freeze, or will neither take place?
At 0oC the amount of ice melted and the amount of frozen water are the same.
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Why are cloudy nights generally warmer than clear ones?
In very humid climates where there are numerous bodies of water, such as in Florida, it is unusual for temperatures to rise above about 35o.C (95o)F In deserts, however, temperatures can rise far above this. Explain how the evaporation of water helps limit high temperatures in humid climates.
Why are thermometers that are used in weather stations shielded from the sunshine? What does a thermometer measure if it is shielded from the sunshine and also if it is not?
Find the net rate of heat transfer by radiation from a skier standing in the shade, given the following. She is completely clothed in white (head to foot, including a ski mask), the clothes have an emissivity of 0.200 and a surface temperature of 10.0ºC , the surroundings are at −15.0ºC , and her surface area is\({\bf{1}}{\bf{.60}}\;{{\bf{m}}^{\bf{2}}}\).
When still air cools by radiating at night, it is unusual for temperatures to fall below the dew point. Explain why.
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