X d. Levi is doing an experiment. He has two speakers set up d = 3.32 m apart. They each play the same tone, in phase. He starts near one of the speakers and walks away perpendicular to the line between the speakers. He keeps walking until there is a quiet spot caused by destructive interference from the speakers. This occurs at a distance x = 3.3 m. You may assume the speed of sound is 340 m/s. What is the lowest possible frequency the speakers could be making for there to be destructive interference at this location? f = Hz What are the next two harmonic frequencies that could also cause destructive interference? f2 = Hz f3 = Hz

X d. Levi is doing an experiment. He has two speakers set up d = 3.32 m apart. They each play the same tone, in phase. He starts near one of the speakers and walks away perpendicular to the line between the speakers. He keeps walking until there is a quiet spot caused by destructive interference from the speakers. This occurs at a distance x = 3.3 m. You may assume the speed of sound is 340 m/s. What is the lowest possible frequency the speakers could be making for there to be destructive interference at this location? f = Hz What are the next two harmonic frequencies that could also cause destructive interference? f2 = Hz f3 = Hz

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter14: Superposition And Standing Waves

Section: Chapter Questions

Problem 10P

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In figure OQ18.1 (page 566), a sound wave of wave-lenght 0.8 m divides into two equal parts that recombine to interfere constructively, with the original difference between their path lengths being |r2 r1| = 0.8 m. Rank the following situations according to the intensity of sound at the receiver from the highest to the lowest. Assume the tube walls absorb no sound energy. Give equal ranks to situations in which the intensity is equal. (a) From its original position, the sliding section is moved out by 0.1 m. (b) Next it slides out an additional 0.1 m. (c) It slides out still another 0.1 m. (d) It slides out 0.1 m more.
In Figure OQ14.3, a sound wave of wavelength 0.8 m divides into two equal parts that recombine to interfere constructively, with the original difference between their path lengths being |r2 − r1| = 0.8 m. Rank the following situations according to the intensity of sound at the receiver from the highest to the lowest. Assume the tube walls absorb no sound energy. Give equal ranks to situations in which the intensity is equal. (a) From its original position, the sliding section is moved out by 0.1 m. (b) Next it slides out an additional 0.1 m. (c) It slides out still another 0.1 m. (d) It slides out 0.1 m more. Figure OQ14.3
A room is 6.0 m long and 3.0 m wide. At the front of the room, along one of the 3.0-m-wide walls, two loudspeakers are set 1.0 m apart, with the center point between them coinciding with the center point of the wall. The speakers emit a sound wave of a single frequency and a maximum in sound intensity is heard at the center of the back wall, 6.0 m from the speakers. What is the highest possible frequency of the sound from the speakers if no other maxima are heard anywhere along the back wall?
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