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Electrostatics. finding the resultant force!

  1. Feb 9, 2010 #1
    anyone can help me out? I've tried but my answer and answer key are differnet!

    1. The problem statement, all variables and given/known data

    three point charges lie on a straight line. find the resultant force exerted on (a) the -2[tex]\mu[/tex]C charge, (b) the 5 [tex]\mu[/tex]C charge

    1 (5[tex]\mu[/tex]C) 2(-2[tex]\mu[/tex]C) 3(3 [tex]\mu[/tex]C)

    distance b/w 1,2 = 2cm
    distance b/w 2,3 = 4cm




    2. Relevant equations

    k q1 x q2 / distance^2


    3. The attempt at a solution
     
  2. jcsd
  3. Feb 9, 2010 #2
    please show your attempt even if it was not correct so we can see at which step you have problem ..
     
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