问题描述:
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宇宙飞船在一颗直径2 .2千米,平均密度2 .2克/立方厘米的小行星上着陆,这颗小行星在缓慢的自转,宇航员决定用2 .2小时的时间沿着这颗小行星的赤道走一圈,他们的这种想法是否能够实现?A spaceship landed on an asteroid 2 .2 km in diameter with an average density of 2 .2g/cm3 . The asteroid is slowly rotating. The cosmonauts decided to travel along the equator of the asteroid in a rover in 2 .2 hours. Will it be possible for them to do such a thing
A.能
B.不能
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上一篇:为什么有些恒星用蓝光观测时能够被分解为双星,而用红光观测时却不可以?Why might some stars appear double in blue light through they could not be resolved in red light
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