高二物理电学题,求各位帮解答(嗯,我有答案,但想不明白过程,所以请详细解答)如图所示,QA=3x10-8QB=-3x10-8,A,B两球相距5cm,在水平方向外电场作用下,A,B保持静止,悬线竖直,求A,B连线中点场强.(
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![高二物理电学题,求各位帮解答(嗯,我有答案,但想不明白过程,所以请详细解答)如图所示,QA=3x10-8QB=-3x10-8,A,B两球相距5cm,在水平方向外电场作用下,A,B保持静止,悬线竖直,求A,B连线中点场强.(](/uploads/image/z/6078214-46-4.jpg?t=%E9%AB%98%E4%BA%8C%E7%89%A9%E7%90%86%E7%94%B5%E5%AD%A6%E9%A2%98%2C%E6%B1%82%E5%90%84%E4%BD%8D%E5%B8%AE%E8%A7%A3%E7%AD%94%EF%BC%88%E5%97%AF%2C%E6%88%91%E6%9C%89%E7%AD%94%E6%A1%88%2C%E4%BD%86%E6%83%B3%E4%B8%8D%E6%98%8E%E7%99%BD%E8%BF%87%E7%A8%8B%2C%E6%89%80%E4%BB%A5%E8%AF%B7%E8%AF%A6%E7%BB%86%E8%A7%A3%E7%AD%94%EF%BC%89%E5%A6%82%E5%9B%BE%E6%89%80%E7%A4%BA%2CQA%3D3x10-8QB%3D-3x10-8%2CA%2CB%E4%B8%A4%E7%90%83%E7%9B%B8%E8%B7%9D5cm%2C%E5%9C%A8%E6%B0%B4%E5%B9%B3%E6%96%B9%E5%90%91%E5%A4%96%E7%94%B5%E5%9C%BA%E4%BD%9C%E7%94%A8%E4%B8%8B%2CA%2CB%E4%BF%9D%E6%8C%81%E9%9D%99%E6%AD%A2%2C%E6%82%AC%E7%BA%BF%E7%AB%96%E7%9B%B4%2C%E6%B1%82A%2CB%E8%BF%9E%E7%BA%BF%E4%B8%AD%E7%82%B9%E5%9C%BA%E5%BC%BA.%EF%BC%88)
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