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Homework Help: Physics answers (i have a test tmrw and there is no key to this!) thanks

  1. Dec 21, 2011 #1
  2. jcsd
  3. Dec 21, 2011 #2

    Pengwuino

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    Gold Member

    https://www.physicsforums.com/showthread.php?t=414380

    Show some effort.
     
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