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Moving three points infinitely away

  1. Feb 7, 2013 #1
    U=kqoq/r ??????

    Please look at the attachments. I was wondering if someone could please check my work. That is all.

    work.png

    howmuchwork.png


    Thank you for your time!
     
  2. jcsd
  3. Feb 7, 2013 #2

    SammyS

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    Why did you square the distances?

    How did you come up with the signs?
     
  4. Feb 7, 2013 #3
    Sorry about the squaring in thr pic. I erased them after I took the pic.
    I checked with the answer key and my answer matched.
    Thank you for your time and rapid response!!! :)
     
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