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Homework Help: Electric dipole moment

  1. May 2, 2009 #1
    Help me to sort out this problem:: Prove that, "integration over[J(r)dr]=del(p)/del(t)" ... where p is the electric dipole moment ... please as soon as possible, reply me ...
  2. jcsd
  3. May 5, 2009 #2
    not enough information?
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