T2a2p.pdf - Physics 102 1 An oscillator at a frequency of 690 Hz drives a pair of speakers that are separated by 0.700 m An observer originally

T2a2p.pdf - Physics 102 1 An oscillator at a frequency of...

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Physics 102 Assignment 2 Problems (Spring Term) 1. An oscillator, at a frequency of 690 Hz, drives a pair of speakers that are separated by 0.700 m. An observer, originally positioned at one of the speakers, walks along a line perpendicular to the line joining the two speakers. (a) How far must the observer walk before reaching a relative maximum in intensity? (b) How far will the observer be from the speaker when the first relative minimum is detected in the intensity? (speed of sound = 345 m/s) 2. The overall length of a piccolo is 32.0 cm. The resonating air column vibrates as in a pipe open at both ends. (a) Find the frequency of the lowest note a piccolo can play. Assume the speed of sound in air is 340 m/s. (b) Opening holes in the side effectively shortens the length of the resonant column. If the highest note a piccolo can sound is 4000 Hz, find the distance between adjacent antinodes for this mode of vibration. a) f = 531 Hz b) d = 4.25 cm 3.

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