2nd Edition

ISBN: 9780134601823

Author: ETKINA, Eugenia, Planinšič, G. (gorazd), Van Heuvelen, Alan

Publisher: Pearson,

Concept explainers

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…

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Textbook Question

Chapter 11, Problem 87RPP

What amplifies the air pressure in the ear?

a. Pinna (2 times) and ossicles (30 times)

b. Pinna (2 times), auditory canal (3 times), and ossicles (30 times)

c. Pinna and auditory canal (2 times), the area change from the eardrum to the oval window (30 times), and the lever action of the ossicles (3 times)

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Chapter 11, Problem 86RPP

Chapter 11, Problem 88RPP

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