Computer Intensive Physics 211Spring, 1998 InfoMall Homework #21 -Printed only (10 points)

Due 4/2/98

IFHW21:

InfoMall Homework

1.(3 pts) Conduct an InfoMallsearch of the properties of sound waves. a) Describe, in your own words, what kind of a wave a sound wave is. citations to any references you use.

Give

2. (2 pts) Copy a paragraph describing each of the following sound phenomena: Give the citation for each paragraph. b) Beats c) Resonance 3. (5 pts) The pressure in a sound wave is given: p = ( 3.0Pa)sin[(45.0m-1)x]cos[(250s-1)t] a) What are the amplitude and velocity of the component waves whose superposition gives rise to this vibration? b) Determine the distance between the nodes. c) Graph the pressure of the sound at several different times to provide a "motion picture" of the sound in the x direction.