几道SAT2物理题(英文),
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几道SAT2物理题(英文),
1、In the Rotherford scattering experiments,the trajectory(轨道)of the alpha particles was in the shape of a(an):
A.hyperbola(双曲线)
B.parabola(抛物线)
C.ciecle
D.ellipse(椭圆)
E.straight line
1、In the Rotherford scattering experiments,the trajectory(轨道)of the alpha particles was in the shape of a(an):
A.hyperbola(双曲线)
B.parabola(抛物线)
C.ciecle
D.ellipse(椭圆)
E.straight line
因为正电荷相互排斥,只能无限接近,不能接触,接近到一定程度后,电荷间的库仑力增大,使α粒子的轨道改变方向,它的轨迹便近似于双曲线