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Homework Help: Kinetic Enegy

  1. Aug 10, 2009 #1
    1. The problem statement, all variables and given/known data

    What initial kinetic energy must an alpha particle have if it is to approach a stationary nickel nucleus to within a distance of 24.6 fm?

    2. Relevant equations

    not sure

    3. The attempt at a solution

    I'm not really sure how to connect the KE with the distance of the nucleus. Can someone please give me a hint
  2. jcsd
  3. Aug 10, 2009 #2


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    Homework Helper

    Here's a hint: conservation of energy.
  4. Aug 10, 2009 #3


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    Science Advisor
    Homework Helper

    Hint: what is the PE at that distance? :smile:
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