场电荷Q=2×10-4C,是正点电荷;检验电荷q=2×10-5,是负电荷,它们相距r=2m且都在真空中,如图所示.(1)q受的电场力.(2)q所在的B点的场强EB.(3)只将q换为=4×10-5C的正点电荷,再求受力及B点的场强.(4)将受
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/21 10:23:51
![场电荷Q=2×10-4C,是正点电荷;检验电荷q=2×10-5,是负电荷,它们相距r=2m且都在真空中,如图所示.(1)q受的电场力.(2)q所在的B点的场强EB.(3)只将q换为=4×10-5C的正点电荷,再求受力及B点的场强.(4)将受](/uploads/image/z/7666191-63-1.jpg?t=%E5%9C%BA%E7%94%B5%E8%8D%B7Q%3D2%C3%9710-4C%2C%E6%98%AF%E6%AD%A3%E7%82%B9%E7%94%B5%E8%8D%B7%EF%BC%9B%E6%A3%80%E9%AA%8C%E7%94%B5%E8%8D%B7q%3D2%C3%9710-5%2C%E6%98%AF%E8%B4%9F%E7%94%B5%E8%8D%B7%2C%E5%AE%83%E4%BB%AC%E7%9B%B8%E8%B7%9Dr%3D2m%E4%B8%94%E9%83%BD%E5%9C%A8%E7%9C%9F%E7%A9%BA%E4%B8%AD%2C%E5%A6%82%E5%9B%BE%E6%89%80%E7%A4%BA.%281%29q%E5%8F%97%E7%9A%84%E7%94%B5%E5%9C%BA%E5%8A%9B.%282%29q%E6%89%80%E5%9C%A8%E7%9A%84B%E7%82%B9%E7%9A%84%E5%9C%BA%E5%BC%BAEB.%283%29%E5%8F%AA%E5%B0%86q%E6%8D%A2%E4%B8%BA%3D4%C3%9710-5C%E7%9A%84%E6%AD%A3%E7%82%B9%E7%94%B5%E8%8D%B7%2C%E5%86%8D%E6%B1%82%E5%8F%97%E5%8A%9B%E5%8F%8AB%E7%82%B9%E7%9A%84%E5%9C%BA%E5%BC%BA.%284%29%E5%B0%86%E5%8F%97)
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