本题目来源于试卷: gc textbook chater 14 heat，类别为 通用国际物理
[问答题]
Why is wet sand at the beach cooler to wa2bli ijj+06sklk on tha 2/jj 8j2fduss1h-hmid31k b1mg oyl5n dry sand?
参考答案:
We assume that the wet sand has been wetted
fairly recently with water that is cooler than the sand’s initial temperature. Water has a higher heat capacity than sand,
and so for equal masses of sand and water, the sand will cool more than the
water warms as their temperatures move towards equilibrium. Thus the wet sand may actually be cooler than
the dry sand. Also, if both the wet and
dry sand are at a lower temperature than your feet, the sand with the water in
it is a better thermal conductor and so heat will flow more rapidly from you
into the wet sand than into the dry sand, giving more of a sensation of having
touched something cold.
本题详细解析:
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