Help!一道有关电场的稍难物理题质量均为m的3个带电小球A、B、C放置在光滑绝缘的水平面上,彼此相隔的距离均为R(R比小球半径r大得多),B球带的电荷量为Q(B)=-3q,A球带的电荷量为Q(A)=+6q.
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![Help!一道有关电场的稍难物理题质量均为m的3个带电小球A、B、C放置在光滑绝缘的水平面上,彼此相隔的距离均为R(R比小球半径r大得多),B球带的电荷量为Q(B)=-3q,A球带的电荷量为Q(A)=+6q.](/uploads/image/z/9319522-58-2.jpg?t=Help%21%E4%B8%80%E9%81%93%E6%9C%89%E5%85%B3%E7%94%B5%E5%9C%BA%E7%9A%84%E7%A8%8D%E9%9A%BE%E7%89%A9%E7%90%86%E9%A2%98%E8%B4%A8%E9%87%8F%E5%9D%87%E4%B8%BAm%E7%9A%843%E4%B8%AA%E5%B8%A6%E7%94%B5%E5%B0%8F%E7%90%83A%E3%80%81B%E3%80%81C%E6%94%BE%E7%BD%AE%E5%9C%A8%E5%85%89%E6%BB%91%E7%BB%9D%E7%BC%98%E7%9A%84%E6%B0%B4%E5%B9%B3%E9%9D%A2%E4%B8%8A%2C%E5%BD%BC%E6%AD%A4%E7%9B%B8%E9%9A%94%E7%9A%84%E8%B7%9D%E7%A6%BB%E5%9D%87%E4%B8%BAR%EF%BC%88R%E6%AF%94%E5%B0%8F%E7%90%83%E5%8D%8A%E5%BE%84r%E5%A4%A7%E5%BE%97%E5%A4%9A%EF%BC%89%2CB%E7%90%83%E5%B8%A6%E7%9A%84%E7%94%B5%E8%8D%B7%E9%87%8F%E4%B8%BAQ%EF%BC%88B%EF%BC%89%3D-3q%2CA%E7%90%83%E5%B8%A6%E7%9A%84%E7%94%B5%E8%8D%B7%E9%87%8F%E4%B8%BAQ%EF%BC%88A%EF%BC%89%3D%2B6q.)
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