PROBLEMS TO BE WRITTEN UP AND TURNED IN AT RECITATION

     This problem is due at your first recitation meeting after Wed 03/21.
     The problem should be written on a single sheet of paper (front and 
     back), or if multiple sheets are used, staple them together.  For full 
     credit, the work must be neat, with clearly labeled diagrams.  The 
     labels must be in BOTH words and symbols.  For each part of the problem, 
     you must BRIEFLY explain your strategy in words, as well as neatly 
     showing your physics equations and math, with proper units. 
               
            Problem from Wolfson (3rd edition) Chapter 27.

            72.  A circular pan of radius b has a plastic bottom 
                 and metallic side wall of height h.  It is filled 
                 with solution of resistivity rho.  A metal disk
                 of radius a and height h is place at the center 
                 of the pan, as shown in the figure.  The side and
                 disk are essentially perfect conductors.  Show 
                 that the resistance measured from side to disk is
                 given by rho*ln(b/a)/(2pi*h).  (20 points)

                 Here is a pdf version of the figure.