College Physics
College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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Concept explainers

Properties of sound
A sound wave is a mechanical wave (or mechanical vibration) that transit through media such as gas (air), liquid (water), and solid (wood).
Quality Of Sound
A sound or a sound wave is defined as the energy produced due to the vibrations of particles in a medium. When any medium produces a disturbance or vibrations, it causes a movement in the air particles which produces sound waves. Molecules in the air vib…
Categories of Sound Wave
People perceive sound in different ways, like a medico student takes sound as vibration produced by objects reaching the human eardrum. A physicist perceives sound as vibration produced by an object, which produces disturbances in nearby air molecules th…
Question

When human vocal cords are used to sing "falsetto", the result is a very pure sound, consisting of only the fundamental frequency. Assume two singers are singing falsetto, producing a note with frequency 4063 Hz and a beat frequency of 4.5 Hz.

a. By how many hertz is the frequency of the sound produced by the lower note lower than the frequency of the combined sound? 

b. By how many hertz is the frequency of the sound produced by the higher note higher than the frequency of the combined sound? 

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