求匀强电场强度?用一条绝缘轻绳悬挂一个小球,小球质量为一点零乘以十的负二次方kg,所带电荷量为正二点零乘以十的负八次方库仑,现加一个水平方向的匀强电场,平衡时绝缘绳与铅垂线成30
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![求匀强电场强度?用一条绝缘轻绳悬挂一个小球,小球质量为一点零乘以十的负二次方kg,所带电荷量为正二点零乘以十的负八次方库仑,现加一个水平方向的匀强电场,平衡时绝缘绳与铅垂线成30](/uploads/image/z/14223994-34-4.jpg?t=%E6%B1%82%E5%8C%80%E5%BC%BA%E7%94%B5%E5%9C%BA%E5%BC%BA%E5%BA%A6%3F%E7%94%A8%E4%B8%80%E6%9D%A1%E7%BB%9D%E7%BC%98%E8%BD%BB%E7%BB%B3%E6%82%AC%E6%8C%82%E4%B8%80%E4%B8%AA%E5%B0%8F%E7%90%83%2C%E5%B0%8F%E7%90%83%E8%B4%A8%E9%87%8F%E4%B8%BA%E4%B8%80%E7%82%B9%E9%9B%B6%E4%B9%98%E4%BB%A5%E5%8D%81%E7%9A%84%E8%B4%9F%E4%BA%8C%E6%AC%A1%E6%96%B9kg%2C%E6%89%80%E5%B8%A6%E7%94%B5%E8%8D%B7%E9%87%8F%E4%B8%BA%E6%AD%A3%E4%BA%8C%E7%82%B9%E9%9B%B6%E4%B9%98%E4%BB%A5%E5%8D%81%E7%9A%84%E8%B4%9F%E5%85%AB%E6%AC%A1%E6%96%B9%E5%BA%93%E4%BB%91%2C%E7%8E%B0%E5%8A%A0%E4%B8%80%E4%B8%AA%E6%B0%B4%E5%B9%B3%E6%96%B9%E5%90%91%E7%9A%84%E5%8C%80%E5%BC%BA%E7%94%B5%E5%9C%BA%2C%E5%B9%B3%E8%A1%A1%E6%97%B6%E7%BB%9D%E7%BC%98%E7%BB%B3%E4%B8%8E%E9%93%85%E5%9E%82%E7%BA%BF%E6%88%9030)
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