如图所示,两根长为L的丝线下各悬挂一质量为m的带电小球A B .A,B带电量分别为+q和-q,今加上方向水平向左的匀强电场E,使连结AB的线(长为L)拉直,并使两小球处于静止状态,试问当E的大小为多
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![如图所示,两根长为L的丝线下各悬挂一质量为m的带电小球A B .A,B带电量分别为+q和-q,今加上方向水平向左的匀强电场E,使连结AB的线(长为L)拉直,并使两小球处于静止状态,试问当E的大小为多](/uploads/image/z/4548435-51-5.jpg?t=%E5%A6%82%E5%9B%BE%E6%89%80%E7%A4%BA%2C%E4%B8%A4%E6%A0%B9%E9%95%BF%E4%B8%BAL%E7%9A%84%E4%B8%9D%E7%BA%BF%E4%B8%8B%E5%90%84%E6%82%AC%E6%8C%82%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%83A+B+.A%2CB%E5%B8%A6%E7%94%B5%E9%87%8F%E5%88%86%E5%88%AB%E4%B8%BA%2Bq%E5%92%8C-q%2C%E4%BB%8A%E5%8A%A0%E4%B8%8A%E6%96%B9%E5%90%91%E6%B0%B4%E5%B9%B3%E5%90%91%E5%B7%A6%E7%9A%84%E5%8C%80%E5%BC%BA%E7%94%B5%E5%9C%BAE%2C%E4%BD%BF%E8%BF%9E%E7%BB%93AB%E7%9A%84%E7%BA%BF%EF%BC%88%E9%95%BF%E4%B8%BAL%EF%BC%89%E6%8B%89%E7%9B%B4%2C%E5%B9%B6%E4%BD%BF%E4%B8%A4%E5%B0%8F%E7%90%83%E5%A4%84%E4%BA%8E%E9%9D%99%E6%AD%A2%E7%8A%B6%E6%80%81%2C%E8%AF%95%E9%97%AE%E5%BD%93E%E7%9A%84%E5%A4%A7%E5%B0%8F%E4%B8%BA%E5%A4%9A)
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