Wave Motion I

   A piano wire is made of steel, with a diameter of 1.04 mm.
   The wire is stretched inside the piano to a tension of 400 N.

     Q:  How fast do vibrations travel down this wire?

     Q:  This particular wire is 1.2 m long.  
         How long does it take a wave to travel from one 
         end to the other?

     Q:  Can you guess the note this wire will produce?