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Two identical loudspeakers are located at points A and B,

University Physics | 13th Edition | ISBN: 9780321675460 | Authors: Hugh D. Young, Roger A. Freedman ISBN: 9780321675460 31

Solution for problem 70P Chapter 16

University Physics | 13th Edition

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University Physics | 13th Edition | ISBN: 9780321675460 | Authors: Hugh D. Young, Roger A. Freedman

University Physics | 13th Edition

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Problem 70P

Two identical loudspeakers are located at points A and B, 2.00 m apart. The loud-speakers are driven by the same amplifier and produce sound waves with a frequency of 784 Hz. Take the speed of sound in air to be 344 m/s. A small microphone is moved out from point B along a line perpendicular to the line connecting A and B (line BC in ?Fig. P16.65?). (a) At what distances from B will there be ?destructive interference? (b) At what distances from B will there be ?constructive interference? (c) If the frequency is made low enough, there will be no positions along the line BC at which destructive interference occurs. How low must the frequency be for this to be the case?

Step-by-Step Solution:

Solution 70P Step 1: The frequency of the sound waves created by two of the speakers is 784 Hz. The speed of the sound waves in air is 344 m/s. So, as we know that, velocity = frequency × wavelength wavelength = 344 / 784 = 0.438 m Step 2: The distance between two speakers is 2 meters. The microphone was taken in the perpendicular direction from the line joining two speakers as shown in the figure.

Step 3 of 3

Chapter 16, Problem 70P is Solved
Textbook: University Physics
Edition: 13
Author: Hugh D. Young, Roger A. Freedman
ISBN: 9780321675460

The full step-by-step solution to problem: 70P from chapter: 16 was answered by , our top Physics solution expert on 05/06/17, 06:07PM. This textbook survival guide was created for the textbook: University Physics, edition: 13. The answer to “Two identical loudspeakers are located at points A and B, 2.00 m apart. The loud-speakers are driven by the same amplifier and produce sound waves with a frequency of 784 Hz. Take the speed of sound in air to be 344 m/s. A small microphone is moved out from point B along a line perpendicular to the line connecting A and B (line BC in ?Fig. P16.65?). (a) At what distances from B will there be ?destructive interference? (b) At what distances from B will there be ?constructive interference? (c) If the frequency is made low enough, there will be no positions along the line BC at which destructive interference occurs. How low must the frequency be for this to be the case?” is broken down into a number of easy to follow steps, and 123 words. Since the solution to 70P from 16 chapter was answered, more than 2330 students have viewed the full step-by-step answer. University Physics was written by and is associated to the ISBN: 9780321675460. This full solution covers the following key subjects: line, frequency, interference, along, low. This expansive textbook survival guide covers 26 chapters, and 2929 solutions.

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