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Electrostatics - Calculate the repelling force of a charge q

  1. Jun 3, 2008 #1

    10001

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    1. The problem statement, all variables and given/known data
    It is given a hemisperical shell charged uniformally with a density charge equal to s.
    Calculate the force by which it repels an electric charge q which is put in its center(in the center of the largest diameter).
     
    10001, Jun 3, 2008
  2. jcsd
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  3. Jun 3, 2008 #2

    tiny-tim

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    Welcome to PF!

    HI 10001! Welcome to PF! :smile:

    The rule here is that you show us what you've tried, and where you're stuck … then we'll know how to help you! :smile:
     
    tiny-tim, Jun 3, 2008
  4. Jun 3, 2008 #3

    10001

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    I just cant do it
    :smile:
     
    10001, Jun 3, 2008
  5. Jun 3, 2008 #4

    tiny-tim

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    Calculate the force from a little bit of the hemisphere, and then add all the forces from all the little bits. :smile:
     
    tiny-tim, Jun 3, 2008
  6. Jun 4, 2008 #5

    10001

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    I know that :smile:
    Easy to say :smile:

    Now please could you give me a hand.I have my physics exam approaching...
     
    10001, Jun 4, 2008
  7. Jun 4, 2008 #6

    tiny-tim

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    No … try it yourself!

    This forum is to help you, not to do your work for you! :smile:
     
    tiny-tim, Jun 4, 2008
  8. Jun 4, 2008 #7

    10001

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    I did it :smile:
     
    10001, Jun 4, 2008
  9. Jun 4, 2008 #8

    tiny-tim

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    :biggrin: Woohoo! :biggrin:​
     
    tiny-tim, Jun 4, 2008
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