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Homework Help: Vector analysis point charges

  1. Jul 15, 2010 #1
    1. The problem statement, all variables and given/known data
    i think i may have solved this but im worried im wrong because it seemed too simple. I wouldn't bother posting too check except that its for an assignment..... the question is in the attachment- can someone please check this!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

    2. Relevant equations

    3. The attempt at a solution



    F_4,2=(3*10^(-6)^2*9*10^9)/(〖0.6〗^2+〖0.3〗^2 )
    =0.18cosθ+0.18 sinθ


    Attached Files:

  2. jcsd
  3. Jul 15, 2010 #2


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    that looks correct,
  4. Jul 15, 2010 #3
    thanks ush - cant get the other one though
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