论文部分内容阅读
在做一本课外习题(《五年高考三年模拟》)时,遇到了下面这道题,做得我云里雾里,几个“基友”一番讨论,也没有找到好的解决办法,只好去请教老师。题目目::如图1所示,空间存在足够大、正交的匀强电、磁场,电场强度为E、方向竖直向下,磁感应强度为B、方向垂直纸面向里。从电、磁场中某点P由静止释放一个质量为m、带电量为+q的粒子(粒子受到的重力忽略不计),其运动轨迹如图虚线所示。对于带电粒子在电、磁场中下落的最大高
When I did an extra-curricular exercise (“Three-year College Entrance Examination for Three Years”), I encountered the following question and did some discussion and found no good one Solution, had to ask a teacher. Title: As shown in Figure 1, the space is large enough, orthogonal uniform strong electricity, magnetic field, electric field strength E, the direction of vertical down, the magnetic induction of B, the direction of vertical paper facing. From the electric and magnetic field at a certain point P by the static release of a mass m, charged q + particles (particles are subject to the neglect of gravity), the trajectory shown in Figure dashed line. For charged particles in the electric and magnetic field drop the maximum height