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一个质量为m、带电量为+q的运动粒子(不计重力),从O点处沿+y方向以初速度v0射入一个边界为矩形的匀强磁场中,磁场方向垂直于xOy平面向里,它的边界分别是y=0,y=a,x=-1.5a,x=1.5a,如图所示,改变磁感强度B的大小,粒子可从磁场不同边界面射出,并且射出磁场后偏离原来速度方向的角度θ会随之改变,试讨论粒子可以从哪几个边界射出并与之对应的磁感强度B的大小及偏转角度θ各在什么范围内?
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参考解析:
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