Physics (5th Edition)
5th Edition
ISBN: 9780321976444
Author: James S. Walker
Publisher: PEARSON
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Textbook Question
Chapter 14, Problem 57PCE
A pair of in-phase stereo speakers is placed side by side, 0.914 m apart. You stand directly in front of one of the speakers, 2.44 m from the speaker. What is the lowest frequency that will produce constructive interference at your location?
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Two out of phase loudspeakers are some distance apart. A person stands 5.30 m from one speaker and 2.60 m from the other. What is the third lowest frequency at which constructive interference will occur? The speed of sound in air is 338 m/s.
Two identical loudspeakers 2.0 m apart are emitting 1800 Hz sound waves into a room where the speed of sound is 340 m/s. Is the point 4.0 m directlyin front of one of the speakers, perpendicular to the line joining the speakers, a point of maximum constructive interference, perfect destructive interference, or something in between?
A speaker, speaker A, is 2.00 m in front of you playing a single frequency 35.00Hz.* A second speaker, speaker B, is placed behind speaker A, further from you and along the line from you to speaker A. The speaker B plays the same frequency and the difference in phase constant between the two speakers is Δ øo = π /2.
a) At what distance from you, further than the first speaker, do you need to place the second speaker so that there is total deconstructive interference, amplitude zero at all times, at your location? Assume 20 oc.
There are a discrete set of infinite answers and I will accept any of them.
Chapter 14 Solutions
Physics (5th Edition)
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