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Determining the Weight of a simple string

  1. May 7, 2013 #1

    It's been a while since I've dealt with the 'Weight' concept, if we have a string with N molecules and 'n' of the N molecules are in an excited state and the rest (N-n) molecules are in a ground state - what is the weight of this system?

    Any help would be appreciated,
  2. jcsd
  3. May 7, 2013 #2
    Solved, Thanks
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