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Electric field/charge

  1. May 20, 2003 #1

    Dx

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    An electron is held up against the force of gravity by attraction of a fixed proton some distance above it. How far above the electron is the proton?

    I donno what to do here? I have nothing to add or i would show my work. Can anyone help me get started.

    Thanks
    Dx :wink:
     
  2. jcsd
  3. May 20, 2003 #2
    Find the point where the gravitational force between the electron and ground is equal to the electrostatic force between the proton and electron.
     
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