如图所示,A、B两个点电荷的电量分别为+Q和+q,放在光滑绝缘水平面上,A、B之间用绝缘的轻弹簧连接.当系统平衡时,弹簧的伸长量为x0.若弹簧发生的均是弹性形变.(A)保持Q不变,将q变为2q,平衡
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![如图所示,A、B两个点电荷的电量分别为+Q和+q,放在光滑绝缘水平面上,A、B之间用绝缘的轻弹簧连接.当系统平衡时,弹簧的伸长量为x0.若弹簧发生的均是弹性形变.(A)保持Q不变,将q变为2q,平衡](/uploads/image/z/11272351-31-1.jpg?t=%E5%A6%82%E5%9B%BE%E6%89%80%E7%A4%BA%2CA%E3%80%81B%E4%B8%A4%E4%B8%AA%E7%82%B9%E7%94%B5%E8%8D%B7%E7%9A%84%E7%94%B5%E9%87%8F%E5%88%86%E5%88%AB%E4%B8%BA%2BQ%E5%92%8C%2Bq%2C%E6%94%BE%E5%9C%A8%E5%85%89%E6%BB%91%E7%BB%9D%E7%BC%98%E6%B0%B4%E5%B9%B3%E9%9D%A2%E4%B8%8A%2CA%E3%80%81B%E4%B9%8B%E9%97%B4%E7%94%A8%E7%BB%9D%E7%BC%98%E7%9A%84%E8%BD%BB%E5%BC%B9%E7%B0%A7%E8%BF%9E%E6%8E%A5.%E5%BD%93%E7%B3%BB%E7%BB%9F%E5%B9%B3%E8%A1%A1%E6%97%B6%2C%E5%BC%B9%E7%B0%A7%E7%9A%84%E4%BC%B8%E9%95%BF%E9%87%8F%E4%B8%BAx0.%E8%8B%A5%E5%BC%B9%E7%B0%A7%E5%8F%91%E7%94%9F%E7%9A%84%E5%9D%87%E6%98%AF%E5%BC%B9%E6%80%A7%E5%BD%A2%E5%8F%98.%EF%BC%88A%EF%BC%89%E4%BF%9D%E6%8C%81Q%E4%B8%8D%E5%8F%98%2C%E5%B0%86q%E5%8F%98%E4%B8%BA2q%2C%E5%B9%B3%E8%A1%A1)
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