题目内容
如右图所示,有界匀强磁场边界线SP//MN,速率不同的同种带电粒子(重力不计)从S 点沿SP方向同时射入磁场。其中穿过a点的粒子速度v1与MN垂直,穿过b点的粒子速度v2与MN成60°角,设两粒子从S到a、b所需时间分别为t1和t2。
(1)在图上画出两粒子的运动轨迹;
(2)求v1:v2;
(3)求t1:t2。![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241220150516673.jpg)
(1)在图上画出两粒子的运动轨迹;
(2)求v1:v2;
(3)求t1:t2。
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241220150516673.jpg)
(1)![](http://thumb.1010pic.com/pic2/upload/papers/20140824/2014082412201508216439.jpg)
(2)![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824122015098455.gif)
(3)![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824122015113422.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/2014082412201508216439.jpg)
(2)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824122015098455.gif)
(3)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824122015113422.gif)
(1)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/2014082412201508216439.jpg)
(2)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824122015160573.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824122015176488.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824122015191645.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824122015207608.gif)
(3)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824122015223652.gif)
![](http://thumb2018.1010pic.com/images/loading.gif)
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