题目内容
如图所示,如果把水星和金星绕太阳的运动视为匀速圆周运动,从水星与金星在一条直线上开始计时,若天文学家测得在相同时间内水星转过的角度为θ1,金星转过的角度为θ2(θ1、θ2均为锐角),则由此条件可求得( )
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/201408250028456573465.jpg)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/201408250028456573465.jpg)
A.水星和金星绕太阳运动的周期之比 |
B.水星和金星的密度之比 |
C.水星和金星到太阳中心的距离之比 |
D.水星和金星绕太阳运动的向心加速度大小之比 |
ACD
试题分析:星球运动的周期为:
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825002845673951.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825002845704297.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825002845719967.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825002845735720.png)
![](http://thumb2018.1010pic.com/images/loading.gif)
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