Ph 213 Chapter : harmonic waves 2.pdf

Sound Wave Interference Revisited Draw two harmonic waves that are 90° out of phase. Then draw the superposition of these two waves?

A string closed at each end is plucked and the following two standing waves( second harmonic and 3rd harmonic) are created. The fundamental frequency( n=1) is 60 Hz. What is the wavelength of the second harmonic(n=2) and third harmonic(n=3)

Two harmonic waves traveling in opposite directions interfere toproduce a standing wave described by y = 2 sin (4x) cos (3t) wherex
is in m and t is in s. What is the speed (in m/s) of theinterfering waves?
a. 0.75
b. 0.25
c. 1.3
d. 12
e. 3.0