Q#3

Two adjacent sourceseach emit a frequency of 800 Hz in airwhere the velocity of soundis 340 m/s. How much farther back wouldsource 1 have to be movedso that an observer in front of thesources hears nosound?

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Two speakers that are 12.0 m apart produce in-phase soundwavesof frequency 270 Hz in a room where the speed of soundis 340 m/s. Awoman starts out at the midpoint between the twospeakers. Theroom's walls and ceiling are covered with absorbersto eliminatereflections, and she listens with only one ear forbestprecision.

What does she hear, constructive or destructiveinterference?and why?

She now walks slowly toward one of the speakers. How farfromthe center must she walk before she first hears the sound reachaminimum intensity?

How far from the center must she walk before she firsthearsthe sound maximally enhanced?

Two loudspeakers are placed on a wall 3.00 m apart. Alistenerstands 4.00 m from the walldirectly in front of one of thespeakers. A single oscillator isdriving the speakers at a frequencyof 700 Hz.

(a) What is the phase difference between the two waves whentheyreach the observer? (Your answer should be between 0and2Ï.)

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(b) What is the frequency closest to 700 Hz to which the oscillatormay beadjusted such that the observer hears minimal sound?

The overall length of a particular wind instrument is 35.0 cm. Theresonating air column vibrates as in a pipe that is open at bothends.
(a) Find the frequency of the lowest note this instrument can play,assuming that the speed of sound in air is 340 m/s.

(b) Opening holes in the side effectively shortens the length ofthe resonant column. If the highest note this instrument can soundis 4500 Hz, find the distance between adjacent antinodes for thismode of vibration.

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Q#3

Two adjacent sourceseach emit a frequency of 800 Hz in airwhere the velocity of soundis 340 m/s. How much farther back wouldsource 1 have to be movedso that an observer in front of thesources hears nosound?

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Physics: Principles with Applications

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Q#3 Two adjacent sourceseach emit a frequency of 800 Hz in airwhere the velocity of soundis 340 m/s. How much farther back wouldsource 1 have to be movedso that an observer in front of thesources hears nosound?

Related textbook solutions

Physics: Principles with Applications

Related questions

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Q#3

Two adjacent sourceseach emit a frequency of 800 Hz in airwhere the velocity of soundis 340 m/s. How much farther back wouldsource 1 have to be movedso that an observer in front of thesources hears nosound?