5/7/10
Post date: May 07, 2010 7:54:2 PM
Bell Ringer: Why do the lasers (reflected off a speaker) move around so much? What does a speaker do to create sound?
Introduction to Sound
Laser-speaker demo
15.1 Notes
Homework from Page 325-326
AC: 1, 5
Problems: 5, 8, 11, 12
5. 0.0175 sec
8. 5,150 m/sec
11.a) 340 Hz b) 360 Hz
12.a) 280 Hz b) 260 Hz