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Homework Help: Nuclear Physics homework

  1. Apr 4, 2005 #1
    OK ... i figured out the momentum, however i need help with find the mass. anyone know how?

    What is the momentum of a 0.33 nm X-ray photon?
    2.009E-24 kg · m/s
    What is its effective mass?
    _________ kg

    thanks :biggrin: :biggrin:
  2. jcsd
  3. Apr 4, 2005 #2


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    [itex] h\frac{c}{\lambda}=mc^{2} [/itex] is all u need to know...

  4. Apr 5, 2005 #3
    Dude... Thanks
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