(1)求粒子经过小孔O时的速度大小;
(2)求粒子在磁场中相邻两次经过小孔O时运动的时间及磁场B的大小;
(3)若在Ⅱ区中方向增加一个附加匀强磁场,可使粒子经过小孔O后恰好不能进入到Ⅲ区、并直接从Ⅱ区前表面(方向一侧)P点飞出,求P点坐标为。
同类型试题
y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2