Question 1 J00品05-Interfer...ஆNYC-Midte...XNYC-Pr... ✓+NYC-Probl...Assignment 5- InterferenceThis assignment is meant for practice and will not be collected or marked.Question 1:Two loudspeakers emit sound waves along the x-axis. A listener in front of both speakers hears a maximumsound intensity when speaker 2 is at the origin and speaker 1 is at x=0.510 m. If speaker 1 is slowly movedforward, the sound intensity decreases and then increases, reaching another maximum when speaker 1 isat x = 0.910 m.a) What is the frequency of the sound? Assume Vsound =340 m/s.b) What is the phase difference between the speakers?Question 2:You are standing 2.5 m directly in front of one of the two loudspeakersshown in the figure. They are 3.0 m apart and both are playing a 687 Hztone in phase. As you begin to walk directly away from the speaker, atwhat distance from the speaker do you hear the next minimum soundintensity?Answers: a) 850 Hz b) -1.73 rad2.5 m3.0 mWalkAnswers: 2.98 mQuestion 3:Two loudspeakers in a plane, 6.0 m apart, are playing the same frequency. If you stand 13.0 m in front ofthe plane of the speakers, centered between them, you hear a sound of maximum intensity. As you walkparallel to the plane of the speakers, staying 13.0 m in front of them, you first hear a minimum of soundintensity when you are directly in front of one of the speakers. What is the frequency of the sound?Assume a sound speed of 340 m/s.Answers: 129 HzQuestion 4:A speaker fixed to a moving platform moves toward a wall, emitting a steady sound with a frequency of245 Hz. A person on the platform right next to the speaker detects the sound waves reflected off the walland those emitted by the speaker. How fast should the platform move, vp, for the person to detect a beafrequency of 2.00 Hz? Take the speed of sound to be 344 m/s.Answers: 1.40 m/sPHY-NYCХBLI

Answered: Image /qna-images/answer/c31d5bd7-9f8e-4d35-a875-638cdcafe9fc.jpg

This assignment is meant for practice and will not be collected or marked. Question 1: Two loudspeakers emit sound waves along the x-axis. A listener in front of both speakers hears a maximum sound intensity when speaker 2 is at the origin and speaker 1 is at x=0.510 m. If speaker 1 is slowly moved forward, the sound intensity decreases and then increases, reaching another maximum when speaker 1 is at x 0.910 m. a) What is the frequency of the sound? Assume Vsound =340 m/s. b) What is the phase difference between the speakers? Answers: a) 850 Hz b) -1.73 rad

This assignment is meant for practice and will not be collected or marked. Question 1: Two loudspeakers emit sound waves along the x-axis. A listener in front of both speakers hears a maximum sound intensity when speaker 2 is at the origin and speaker 1 is at x=0.510 m. If speaker 1 is slowly moved forward, the sound intensity decreases and then increases, reaching another maximum when speaker 1 is at x 0.910 m. a) What is the frequency of the sound? Assume Vsound =340 m/s. b) What is the phase difference between the speakers? Answers: a) 850 Hz b) -1.73 rad

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter17: Sound

Section: Chapter Questions

Problem 55P: During a 4th of July celebration, an M80 firework explodes on the ground, producing a bright flash...

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(a) If a submarine’s sonar can measure echo times with a precision of 0.0100 s, what is the smallest difference in distances it can detect? (Assume that the submarine is in the ocean, not in fresh water.) (b) Discuss the limits this time resolution imposes on the ability of the sonar system to detect the size and shape of the object creating the echo.
When poked by a spear, an operatic soprano lets out a 1200—Hz shriek. What is its wavelength if the speed of sound is 345 m/s?
What intensity level does the sound in the preceding problem correspond to?
(a) Ear trumpets were never very common, but they did aid people with hearing losses by gathering sound over a large area and concentrating it on the smaller area of the eardrum. What decibel increase does an ear trumpet produce it its sound gathering area is 900 cm2 and the area of the eardrum is 0.500 cm2, but the trumpet only has an eficiency of 5.00% in transmitting the sound to the eardrum? (b) Comment on the usefulness of the decibel increase found in part (a).
During a 4th of July celebration, an M80 firework explodes on the ground, producing a bright flash and a loud bang. The air temperature of the night air is TF=90.00F . Two observers see the flash and hear the bang. The first observer notes the time between the flash and the bang as 1.00 second. The second observer notes the difference as 3.00 seconds. The line of sight between the two observers meet at a right angle as shown below. What is the distance x between the two observers?
A microphone receiving a pure sound tone feeds an oscilloscope, producing a wave on its screen. If the sound intensity is originally 2.00105W/m2 , but is turned up until the amplitude increases by 30.0% , what is the new intensity?
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A 250-Hz tuning fork is struck and begins to vibrate. A sound-level meter is located 34.00 m away. It takes the sound t=0.10 s to reach the meter. The maximum displacement of the tuning fork is 1.00 mm. Write a wave function for the sound.