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 refers to the min3pxn/-*g/*d kugf zuz,gb9 yh (f-d iuimum sp6eq(v * bk 22lyfkl4ppeed an object must have to leave the Ea* yl4q(l 6bv2 pkf2keprth and never return. The escape velocity for the Moon is about one-fifth what it is for the Earth 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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