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Electric field from two point charges

  1. Sep 6, 2008 #1
    1. The problem statement, all variables and given/known data
    Three point charges are located at the corners of an equilateral triangle as in the figure below. Find the magnitude and direction of the net electric force on the 1.00 µC charge.

    (A = 1.00 µC, B = 6.50 µC, and C = -4.20 µC.)

    magnitude N
    direction ° counterclockwise from the +x-axis




    2. Relevant equations



    3. The attempt at a solution
    I really have no idea where to even start.
     
  2. jcsd
  3. Sep 6, 2008 #2

    LowlyPion

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    What equations do you think applies?
     
  4. Sep 6, 2008 #3
    I really don't know. I know that to find the electric field you use E=ke q1/r1^2 to find the E for the point. However i dont really know how to manipulate the equations to find the answers
     
  5. Sep 6, 2008 #4

    LowlyPion

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    That is the equation for the E field, but they asked you for the Force.

    What is the Force equation?
     
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