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Homework Help: Energy released in nuclear fission problem

  1. Apr 16, 2013 #1
    1. The problem statement, all variables and given/known data


    2. Relevant equations

    3. The attempt at a solution

    (a) Shown.

    (b) W = 975 MeV

    (c) Initially nucleus has volume V. Splits into two smaller particles each with charge Q/2, and volume V/2. So for each particle, Q/2 and R*(1/2)1/3

    So, W' ~ 2 * [(0.5)2/(0.5)1/3] = (0.5)2/3

    ΔW = 360 MeV

    I'm not sure if the volume of each is halved or not by their phrasing..
  2. jcsd
  3. Apr 16, 2013 #2


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    2017 Award

    Staff: Mentor

    Both spheres get V/2, right. The density of nuclei is roughly constant, so volume is conserved in nuclear reactions.
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