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Two identical sources of sound, both emitting waves of equal amplitude and a frequency of 2000Hz, are 80cm apart.

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter18: Superposition And Standing Waves

Section: Chapter Questions

Problem 10PQ

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Concept explainers

Interference of Light

The word "constructive" signifies addition in interference. Constructive interference occurs when the path of the waves that start from the slit differs by 1 entire wavelength or in the intervals of the same. Hence, the waves that are presented on the screen are in phase (crest to crest/trough to trough). The waves interfering constructively forms bright fringes on the screen.

Question

Two identical sources of sound, both emitting waves of equal amplitude and a frequency of 2000Hz, are 80cm apart. A microphone is located on the center line a distance of 2.0m away. What is(a)JK at what angle theta should one observe the first maximum on each side of the center line(b) in radians and(c) in degrees? Assume the speed of sound to be 350 m/s

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