题目内容
已知地球的质量约为火星质量的10倍,地球的半径约为火星半径的2倍,则航天器在火星表面附近绕火星做匀速圆周运动的速率约为( )
A.3.5 km/s | B.5.0 km/s | C.17.7 km/s | D.35.2 km/s |
A
试题分析:由于
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/201408250053093611095.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/201408250053093761077.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825005309392718.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825005309423717.png)
![](http://thumb2018.1010pic.com/images/loading.gif)
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题目内容
A.3.5 km/s | B.5.0 km/s | C.17.7 km/s | D.35.2 km/s |