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]
Escape velocity for the Earth refe2tv5(fpl2-l:cnvcl z rs to the min*bq)ofcv,y*zm c*8p aimum speed an object must have to leave the Earth and never return. The escape velocity for the Moon is about one-fifth what it is for the Eaay,b*f*cpo q*8 mv)zcrth due to the Moon’s smaller mass. Explain why the Moon has practically no atmosphere.
参考答案: Because
the escape velocity is much smaller for the Moon than for the Earth, most gas
molecules even at low temperatures have a speed great enough to escape the
Moon’s gravity. Thus the atmosphere has
“evaporated” over the long time of the Moon’s existence.
本题详细解析:
暂无
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