本题目来源于试卷: gc textbook chapter 13 temperature and kinetic theory，类别为 通用国际物理
[问答题]
As you go higher in the Earth’ +damlaiw.2 -k9lwbczd;+ 9sfxp6 i f7s q(y; u8sk5babatmosphere, the ratio of $N_2$ molecules to $O_2$ molecules increases. Why?
参考答案:
Since an $N_2$ molecule has less mass than an $O_2$
molecule, at the same temperature (and thus the same kinetic energy), $N_2$
molecules will have a larger speed on average than $O_2$ molecules. If we consider “launching” molecules of both
types from the Earth’s surface, the faster-moving $N_2$ will rise higher before
stopping and falling back to Earth. Thus
there will be proportionally more $N_2$ molecules at higher altitudes than at
lower altitudes.
本题详细解析:
暂无
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