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Quick question

  1. Sep 4, 2008 #1
    1. The problem statement, all variables and given/known data

    A charge of -4.10 C is fixed at the center of a compass. Two additional charges are fixed on the circle of the compass (radius = 0.137 m). The charges on the circle are -3.58 C at the position due north and +6.79 C at the position due east. What is (a) the magnitude and (b) direction of the net electrostatic force acting on the charge at the center? Specify the direction as an angle relative to due east.

    i am having a hard time with this problem can somebody guide me through thx
     
  2. jcsd
  3. Sep 4, 2008 #2

    LowlyPion

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    Homework Helper

    Welcome to PF.

    What equations can you think of that might apply?
     
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