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Electrostatics question

  1. Jan 22, 2009 #1
    1. The problem statement, all variables and given/known data

    Hey guys.
    Is it correct what I did there?

    Thanks in advance.

    2. Relevant equations



    3. The attempt at a solution
     

    Attached Files:

  2. jcsd
  3. Jan 22, 2009 #2

    Hootenanny

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    You should be able to tell without any calculation that your solution is incorrect.

    HINT:
    Check the sign
     
  4. Jan 23, 2009 #3
    Yeah, but what about the magnitude?
    As for the sign, it should be opposite from q, right?

    Thanks.
     
  5. Jan 23, 2009 #4

    Hootenanny

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    Looks okay to me :approve:
     
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