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College Physics (10th Edition)
10th Edition
ISBN: 9780321902788
Author: Hugh D. Young, Philip W. Adams, Raymond Joseph Chastain
Publisher: PEARSON
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Textbook Question
Chapter 12, Problem 31P
In a certain home sound system, two small speakers are located so that one is 45.0 cm closer to the listener than the other. For what frequencies of audible sound will these speakers produce (a) destructive interference at the listener, (b) constructive interference at the listener? In each case, find only the three lowest audible frequencies.
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Students have asked these similar questions
In a certain home sound system, two small speakers are located so that one is 70.0 cm closer to the listener than the other.
a)For what frequencies of audible sound will these speakers produce destructive interference at the listener? (Find only the three lowest audible frequencies.)
b)For what frequencies of audible sound will these speakers produce constructive interference at the listener? (Find only the three lowest audible frequencies).
Two compact sources of sound near each other produce in-phase sine waves at
each source. One source is positioned at a distance x, =12.00 m from a microphone
2.
and the other source is positioned at a distance of x, =13.40 m from the same
microphone. The amplitude of the sound at the microphone from each source by itself
is s = 0.0350µm. The plane waves come from essentially the same direction so there
will be interference.
a. If the frequency emitted by the two sources is f = 425.0Hz and the speed of
sound is v= 340.0m/ s, what is the phase difference, 8, in radians, due to the
path length differences to the microphone?
b. When both sources are on, interference changes the total amplitude to
s, = 2s, cos(8/2). What is the total amplitude for the phase difference found in
part 'a.’?
Two speakers, one directly behind the other, are each generating a 245-Hz sound wave. What is the smallest separation distance between the speakers that will produce destructive interference at a listener standing in front of them? The speed of sound is 343 m/s.
Chapter 12 Solutions
College Physics (10th Edition)
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