题目内容
两个半径均为R的圆形平板电极,平行正对放置,相距为d,极板间的电势差为U,板间电场可以认为是均匀的.一个
粒子从正极板边缘以某一初速度垂直于电场方向射入两极板之间,到达负极板时恰好落在极板中心.已知质子电荷为e,质子和中子的质量均视为m,忽略重力和空气阻力的影响,求:
小题1:
粒子在极板间运动的加速度a;
小题2:
粒子的初速度v0?
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824114505709201.gif)
小题1:
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824114505709201.gif)
小题2:
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824114505709201.gif)
小题1:
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824114505756622.gif)
小题2:
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824114505771726.gif)
小题1:
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824114505709201.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824114505756622.gif)
小题2:由
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824114505818458.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824114505834774.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824114505771726.gif)
![](http://thumb2018.1010pic.com/images/loading.gif)
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