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Unsure about answer

  1. Sep 11, 2005 #1
    A proton (m = 1.67 x 10^-27 kg) is suspended at rest in a uniform electric field E. Take into account gravity at the Earth's surface, and determine E.

    I did this problem already but I'm not sure if it's correct...
    I used the equation: E = F / q = ma/e to get an answer of 1.02 x 10 ^-7

    Is this correct?
  2. jcsd
  3. Sep 11, 2005 #2
    yea, that's right.
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