在真空中的o点放一点电荷Q=1.0*10^-9,直线MN过O点,OM=30cm,M点放有一点电荷q= - 2*10^-10C,如图1-63所示.(1)M点的电场强度大小;(2)若M点的电势比N点的电势高15V,则电荷q从M点移到N点,电势能变化
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![在真空中的o点放一点电荷Q=1.0*10^-9,直线MN过O点,OM=30cm,M点放有一点电荷q= - 2*10^-10C,如图1-63所示.(1)M点的电场强度大小;(2)若M点的电势比N点的电势高15V,则电荷q从M点移到N点,电势能变化](/uploads/image/z/8403261-69-1.jpg?t=%E5%9C%A8%E7%9C%9F%E7%A9%BA%E4%B8%AD%E7%9A%84o%E7%82%B9%E6%94%BE%E4%B8%80%E7%82%B9%E7%94%B5%E8%8D%B7Q%3D1.0%2A10%5E-9%2C%E7%9B%B4%E7%BA%BFMN%E8%BF%87O%E7%82%B9%2COM%3D30cm%2CM%E7%82%B9%E6%94%BE%E6%9C%89%E4%B8%80%E7%82%B9%E7%94%B5%E8%8D%B7q%3D+-+2%2A10%5E-10C%2C%E5%A6%82%E5%9B%BE1-63%E6%89%80%E7%A4%BA.%EF%BC%881%EF%BC%89M%E7%82%B9%E7%9A%84%E7%94%B5%E5%9C%BA%E5%BC%BA%E5%BA%A6%E5%A4%A7%E5%B0%8F%EF%BC%9B%EF%BC%882%EF%BC%89%E8%8B%A5M%E7%82%B9%E7%9A%84%E7%94%B5%E5%8A%BF%E6%AF%94N%E7%82%B9%E7%9A%84%E7%94%B5%E5%8A%BF%E9%AB%9815V%2C%E5%88%99%E7%94%B5%E8%8D%B7q%E4%BB%8EM%E7%82%B9%E7%A7%BB%E5%88%B0N%E7%82%B9%2C%E7%94%B5%E5%8A%BF%E8%83%BD%E5%8F%98%E5%8C%96)
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