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Nucleus Splits Kinetic Energy?

  1. Dec 14, 2007 #1
    1. The problem statement, all variables and given/known data

    6. A nucleus of mass Mo=222.0 u at rest spontaneously splits into two equal fragments,
    each of mass M=110 u. When these two fragments are far apart, how much total kinetic
    energy do they have? That is, what is the sum of their individual kinetic energies? (Note
    that 1 u= 1.7 x 10^-27 kg, and 1 uc2 = 15.3 x 10^-11 J.)

    1. 3.060 x 10-10 J
    2. 3.366 x 10-10 J
    3. 3.672 x 10-10 J
    4. 3.978 x 10-10 J
    5. 4.284 x 10-10 J
    6. 4.569 x 10-10 J

    No surroundings so...

    Ef = Ei

    would the equation be....

    KE(of both) + Mc^2 + Mc^2 = Moc^2

    is this set up right??? thanks!
  2. jcsd
  3. Dec 14, 2007 #2

    Shooting Star

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  4. Dec 16, 2007 #3

    Andrew Mason

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    Judging by the available answers, I think you have to specify u to more significant figures. u = 1.67x10^-27 kg. (mass of proton), 1 uc2 = 15.03 x 10^-11 J.

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