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Another mathematical physics question

  1. Dec 2, 2007 #1
    1. The problem statement, all variables and given/known data
    For a metal bar of cross sectional area A, the rate of flow of heat along the bar is given by the expression:


    where K is the thermal conductivity of the material of the bar, and T and x refer to temperature and the distance measured from the high temperature end of the bar respectively. Use this information to solve the following problem.

    A spherical heat source of radius a sits at the centre of a solid sphere of radius b>a.

    The material of the sphere has thermal conductivity K. The source emits heat equally in all directions at the rate Q per second and the outside of the sphere is held at a constant temperature T0. Determine the temperature T at the surface of the source.

    Some help needed please.
  2. jcsd
  3. Dec 3, 2007 #2


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    What work have you done thus far?
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