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一、问题的提出题目如图1(甲),在x>0的空间中存在沿y轴负方向的匀强电场和垂直于xOy平面向里的匀强磁场,电场强度大小为E,磁感应强度大小为B.一质量m,带电量为q(q>0)的粒子从坐标原点O处,以初速度v0沿x轴正方向射入,粒子的运动轨迹见图1(甲),不计粒子的重力.(1)求该粒子运动到y=h时的速度大小v;(2)现只改变入射粒子初速度的大小,发现
First, the problem raised in Figure 1 (A), in x> 0 space exists along the negative y-axis direction of the uniform strong electric field and perpendicular to the xOy plane inward in a strong magnetic field, the size of the electric field strength E, magnetic flux density The size of B. A mass m, charged q (q> 0) of the particles from the coordinate origin O at the initial velocity v0 along the x-axis positive injection, particle trajectory shown in Figure 1 (A), excluding particles (1) Find the velocity v when the particle moves to y = h; (2) Now only change the size of the initial velocity of the incident particle and find that