一质量为m的带电小球,在竖直方向的匀强电场中以初速度v0水平抛出,小球的加速度大小为2g/3,则小球在下落h高度过程中 A.动能增加了2/3mgh B.电势能增加了1/3mghC.重力势能减少了2/3mgh D.机
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![一质量为m的带电小球,在竖直方向的匀强电场中以初速度v0水平抛出,小球的加速度大小为2g/3,则小球在下落h高度过程中 A.动能增加了2/3mgh B.电势能增加了1/3mghC.重力势能减少了2/3mgh D.机](/uploads/image/z/6585408-0-8.jpg?t=%E4%B8%80%E8%B4%A8%E9%87%8F%E4%B8%BAm%E7%9A%84%E5%B8%A6%E7%94%B5%E5%B0%8F%E7%90%83%2C%E5%9C%A8%E7%AB%96%E7%9B%B4%E6%96%B9%E5%90%91%E7%9A%84%E5%8C%80%E5%BC%BA%E7%94%B5%E5%9C%BA%E4%B8%AD%E4%BB%A5%E5%88%9D%E9%80%9F%E5%BA%A6v0%E6%B0%B4%E5%B9%B3%E6%8A%9B%E5%87%BA%2C%E5%B0%8F%E7%90%83%E7%9A%84%E5%8A%A0%E9%80%9F%E5%BA%A6%E5%A4%A7%E5%B0%8F%E4%B8%BA2g%2F3%2C%E5%88%99%E5%B0%8F%E7%90%83%E5%9C%A8%E4%B8%8B%E8%90%BDh%E9%AB%98%E5%BA%A6%E8%BF%87%E7%A8%8B%E4%B8%AD+A%EF%BC%8E%E5%8A%A8%E8%83%BD%E5%A2%9E%E5%8A%A0%E4%BA%862%2F3mgh+B%EF%BC%8E%E7%94%B5%E5%8A%BF%E8%83%BD%E5%A2%9E%E5%8A%A0%E4%BA%861%2F3mghC%EF%BC%8E%E9%87%8D%E5%8A%9B%E5%8A%BF%E8%83%BD%E5%87%8F%E5%B0%91%E4%BA%862%2F3mgh+D%EF%BC%8E%E6%9C%BA)
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