all AT&T; 11:00 PM session.masteringphysics.com Practice Problem 12.1 MasteringP

Question

all AT&T; 11:00 PM session.masteringphysics.com Practice Problem 12.1 MasteringPhysics Practice Problem 12. Here we will examine the wavelength of a sound wave produced by a piano. Let's calculate the wavelength of the sound wave in air at 20 °C if the frequency is f = 262 Hz (the approximate frequency of the note ..middle C” on the piano). Assume that the speed of sound in air is 344 m/s SOLUTION SET UP AND SOLVE The relationship of wavelength to frequency f is given by the following equation: 344 m/s 262 s REFLECT The "high C" sung by coloratura sopranos is two octaves above middle C (a factor of 4 in frequency), or about 1050 Hz. The corresponding wavelength is (1.31 m)/4 = 0.327 m. Part A Practice Problem: The frequency of the lowest note on large pipe organs is about 16 Hz. What is the corresponding wavelength? Express your answer in meters to two significant figures. Submit Give Up Continue >

Explanation / Answer

part A)

speed of the sound = 344 m/s

frequency , f = 16 Hz

as speed of sound = wavelength * frequency

344 = 16 * wavelength

wavelength = 21.5 m

the wavelength is 21.5 m

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