PROBLEMS TO BE WRITTEN UP AND TURNED IN AT RECITATION

     This problem is due at your first recitation meeting after Wed 04/13.
     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. 

         Halliday and Resnick - 2nd Edition - CHAPTER 32 (10 points)

     20.  A stiff wire bent into a semicircle of radius a is rotated
          with frequency f in a uniform magnetic field, as suggested
          in the figure.  What is the amplitude of the varying EMF 
          induced in the loop?  (You must clearly show your logic to 
          get full credit.)

          pdf version of figure