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Hello question please

  1. Jul 6, 2005 #1
    an electron is accelerated from rest thru a potential difference of 400v. what is the final kinetic energy of the electrom

    how much work is requires to bring four point charges eacg wit q= -8pc from infinity to a distance of 3nm from each other

    your help is greatly appreciated
     
  2. jcsd
  3. Jul 7, 2005 #2

    Galileo

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    What have you done so far?
     
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