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Homework Help: Strength of magnetic field

  1. Nov 27, 2009 #1
    What minimum strength of magnetic field is required to balance the gravitational force on a proton moving at speed 3 x 10 to the 6th power m/s?
    Last edited: Nov 27, 2009
  2. jcsd
  3. Nov 27, 2009 #2


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    Homework Helper

    Begin by writing
    magnetic force = gravitational force
    then fill in the detailed formulas.
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