Warm-Up Exercise for lecture 2

Due 8:00 am, Tues, Dec 9

Physics 105, Fall 2008

If two waves are shifted by ________, completely destructive interference will occur.
l/2
2l/3
l
2l

In a standing wave, the points that have the maximum vibration are called:
nodes
anti-nodes

You have two pipes which produce sound: one is open at both ends and the other is open at only one end. If the two pipes have the same length, the fundamental resonant frequency will be ____________ for the two.
the same
different

Complete the following sentences with a short phrase. (a) Standing waves are caused by the interference of two waves which are... (b) Beats are caused by the interference of two waves which are...