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Total Frustration Radioactive Decay Need Fast Help!

  1. Feb 6, 2008 #1
    Total Frustration!!!!Radioactive Decay!!Need Fast Help!


    I have the link to the excercise:

    Here are my answers:

    1. 1200
    2. 2100
    6. 2050
    7. ???

    I would think (7) would be 3775, but it's not. I have been trying this for hours and cannot figure this out, please help. My head hurts....
    Last edited by a moderator: Apr 23, 2017
  2. jcsd
  3. Feb 7, 2008 #2


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    I got 4175 BP.
  4. Feb 8, 2008 #3
    It's 4200
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