题目内容
火星直径约为地球的一半,质量约为地球的十分之一,它绕太阳公转的轨道半径约为地球公转半径的1.5倍。根据以上数据,以下说法正确的是
A.火星表面重力加速度的数值比地球表面小 |
B.火星公转的周期比地球的短 |
C.火星公转的线速度比地球的大 |
D.火星公转的向心加速度比地球的大 |
A
试题分析:根据万有引力等于重力得出:G
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825000003570670.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825000003586651.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825000003601370.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825000003617640.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825000003632504.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825000003648720.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825000003617640.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825000003679424.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825000003866662.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825000003617640.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825000003898629.png)
![](http://thumb2018.1010pic.com/images/loading.gif)
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