1) Sound waves travel with a speed of v =344 m/s in air.
a) What is the wavelength of a 440Hz sound wave?
b) What is the period of the same wave?
c) In steel sound waves travel faster v=6000 m/s. What is the wavelength of a 440Hz sound wave in steel?
2) The sound from lightning travels at 344 m/s, but the light travels at 3 x 108 m/s. Thus the light arrives at your eyes before the sound arrives at your ears. If you count 3 sec. between seeing a lightning strike and hearing it, how far away was the lightning strike?