山东科技版物理选修3-1,第二节,课后习题的第三题怎么做?两个质量均为0.20g的小球,带的电荷量相同,用长尾30.0cm的细线挂在同一点.静止时两线夹角为2θ=10°.小球的半径可忽略不计,求每个小球
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![山东科技版物理选修3-1,第二节,课后习题的第三题怎么做?两个质量均为0.20g的小球,带的电荷量相同,用长尾30.0cm的细线挂在同一点.静止时两线夹角为2θ=10°.小球的半径可忽略不计,求每个小球](/uploads/image/z/3192188-68-8.jpg?t=%E5%B1%B1%E4%B8%9C%E7%A7%91%E6%8A%80%E7%89%88%E7%89%A9%E7%90%86%E9%80%89%E4%BF%AE3-1%2C%E7%AC%AC%E4%BA%8C%E8%8A%82%2C%E8%AF%BE%E5%90%8E%E4%B9%A0%E9%A2%98%E7%9A%84%E7%AC%AC%E4%B8%89%E9%A2%98%E6%80%8E%E4%B9%88%E5%81%9A%3F%E4%B8%A4%E4%B8%AA%E8%B4%A8%E9%87%8F%E5%9D%87%E4%B8%BA0.20g%E7%9A%84%E5%B0%8F%E7%90%83%2C%E5%B8%A6%E7%9A%84%E7%94%B5%E8%8D%B7%E9%87%8F%E7%9B%B8%E5%90%8C%2C%E7%94%A8%E9%95%BF%E5%B0%BE30.0cm%E7%9A%84%E7%BB%86%E7%BA%BF%E6%8C%82%E5%9C%A8%E5%90%8C%E4%B8%80%E7%82%B9.%E9%9D%99%E6%AD%A2%E6%97%B6%E4%B8%A4%E7%BA%BF%E5%A4%B9%E8%A7%92%E4%B8%BA2%CE%B8%3D10%C2%B0.%E5%B0%8F%E7%90%83%E7%9A%84%E5%8D%8A%E5%BE%84%E5%8F%AF%E5%BF%BD%E7%95%A5%E4%B8%8D%E8%AE%A1%2C%E6%B1%82%E6%AF%8F%E4%B8%AA%E5%B0%8F%E7%90%83)
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