a) Assume the speed of sound is 343 m/s in a room. What is the wavelength produced by atuning fork at 262 Hz? (this is approximately the frequency of middle C on a piano)b) Let there be two speakers, A and B, emitting sound with matched phase. If amicrophone is originally exactly between A and B (so that the distance to each is L), howfar to the left do we need to move it so that the microphone detects destructiveinterference?c) Would a person at the position in (b) hear anything? Why?d) If the microphone moves vertically on the page (let this be the y-axis) how does the totalintensity vary with vertical distance? Let each speaker emit intensity lo a distance 1meter from the source.e) How long would it take for a sound pulse to travel from A to B if L = 100 meters?%3|

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Answered: a) Assume the speed of sound is 343 m/s…

a) Assume the speed of sound is 343 m/s in a room. What is the wavelength produced by a tuning fork at 262 Hz? (this is approximately the frequency of middle C on a piano)

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Concept explainers

Stretched string

A stretched string is a wire which is made up of any metal that must have a larger length compared to its thickness. The ends of the wire are fixed, and when they oscillate or are plucked, it produces two reflected transverse waves of the same frequency and same amplitude. The waves or pulses are traveling in alternate directions and superimpose with one another. This waveform is named standing or stationary waves.

Question

a) Assume the speed of sound is 343 m/s in a room. What is the wavelength produced by a
tuning fork at 262 Hz? (this is approximately the frequency of middle C on a piano)
b) Let there be two speakers, A and B, emitting sound with matched phase. If a
microphone is originally exactly between A and B (so that the distance to each is L), how
far to the left do we need to move it so that the microphone detects destructive
interference?
c) Would a person at the position in (b) hear anything? Why?
d) If the microphone moves vertically on the page (let this be the y-axis) how does the total
intensity vary with vertical distance? Let each speaker emit intensity lo a distance 1
meter from the source.
e) How long would it take for a sound pulse to travel from A to B if L = 100 meters?
%3|

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