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电荷在电场中的加速

> α粒子的质量是质子的4倍，电量是质子的2倍，它们从静止开始在同一匀强电场中加速，经过相等的路程之后，α粒子与质子获得的动能之比为：( ) A．1:2 B．1:1 C．2:1 D．1:

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发布时间：2024-09-12

α粒子的质量是质子的4倍，电量是质子的2倍，它们从静止开始在同一匀强电场中加速，经过相等的路程之后，α粒子与质子获得的动能之比为：( )

A．1:2 B．1:1 C．2:1 D．1:

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