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Homework Help: Rearranging equations - is this correct?

  1. Feb 27, 2010 #1
    1. The problem statement, all variables and given/known data

    Rearrange F=Kq1q2/r^2 to make K the subject

    2. Relevant equations

    3. The attempt at a solution

    K=Fr^2/q1q2 - is this correct? Sorry Im new to this!! Thanks :)
  2. jcsd
  3. Feb 27, 2010 #2
    Yes, that's correct.
  4. Feb 27, 2010 #3
    Fab thanks - should have more faith!!!
  5. Feb 27, 2010 #4
    If you want to check your answer, just make up values for k, q1, q2, and r and find F. Then use that F along with the same values for q1, q2, and r and see if you get what you assigned to k originally.
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