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Homework Help: What is the repulsive force pushing these two spheres apart?

  1. Nov 28, 2007 #1
    1. The problem statement, all variables and given/known data

    At the point of fission, a nucleus of 235U with 92 protons is divided into two smaller spheres, each with 46 protons and a radius of 5.9x10^-15m. What is the repulsive force pushing these two spheres apart?

    2. Relevant equations

    F = k(qi)(q2)/d^2

    3. The attempt at a solution

    I'm not quite sure what to use for the numerator of the equation. I believe that 5.9x10^-15m would be used as the distance. So, part of the equation would be (9*10^9)(x)(x)/5.9x10^-15.

    Can anyone lead me to what numbers I SHOULD be using or at least give me a hint? Thank you! :)
    Last edited: Nov 28, 2007
  2. jcsd
  3. Nov 28, 2007 #2


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    Homework Helper

    for coulomb's Law you consider the charges, not the masses...
  4. Nov 28, 2007 #3
    Ah, sorry ._. I was looking over a different page in my notebook.
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