题目内容
质量m=
kg,q=
C的带电粒子以
=1m/s的初速水平射入AB两板间的匀强电场,从A射入,保持水平运动从B'处射出, 已知两板间距为3cm,板长AA'=BB'=4cm,
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824115708708606.gif)
求 :①粒子在两板间作何种运动?
②两板间电势差多大?哪板带正电荷?
③粒子从B'出射时速度多大?
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824115708661116.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824115708677128.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824115708692111.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824115708708606.gif)
求 :①粒子在两板间作何种运动?
②两板间电势差多大?哪板带正电荷?
③粒子从B'出射时速度多大?
(1) 作匀减速运动,a=-7.5m/s2 (2)37.5V,上板带正电荷(3)0.5m/s
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824115708723702.gif)
:
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241157087392294.gif)
![](http://thumb2018.1010pic.com/images/loading.gif)
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