本题目来源于试卷: gc textbook chater 14 heat，类别为 IB物理学
[问答题]
(a) If two objects of different temperatures ay(sz mg3wicn2. f3 mm;v1q+++ljjtzx re placed in contact, willkre,*d - c( fhc;c dyh6r up6ln*+b6ww heat naturally flow from the object with higher internal energy to the object with lower inter-rc(6 lw,wbpr+;yfuh*ed6 dcnhc*6 k nal energy? (b) Is it possible for heat to flow even if the internal energies of the two objects are the same? Explain.
参考答案: (a) Internal energy depends on both the number of molecules of
material and the temperature of the
material. Heat will flow naturally from the object with
the higher temperature to the object with the lower temperature. The object with the high temperature may or
may not be the object with the higher internal energy.
(b) The two objects may consist of one with a
higher temperature and smaller number of molecules,
and
the other with a lower temperature and a larger number of molecules. In that case it is possible for both objects
to have the same internal energy, but heat will still flow from the object with
the higher temperature to the one with the lower temperature.
本题详细解析:
暂无
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