- Loudness of Sound The loudness L of a sound (measured in decibels, dB) is inversely proportional to the square of the distance d from the source of the sound. (a) Write an equation that expresses this variation. (b) Find the constant of proportionality if a person 10 ft from a lawn mower experiences a sound level of 70 dB. (c) If the distance in part (b) is doubled, by what factor is the loudness changed? (d) If the distance in part (b) is cut in half, by what factor is the loudness changed?

- Loudness of Sound The loudness L of a sound (measured in decibels, dB) is inversely proportional to the square of the distance d from the source of the sound. (a) Write an equation that expresses this variation. (b) Find the constant of proportionality if a person 10 ft from a lawn mower experiences a sound level of 70 dB. (c) If the distance in part (b) is doubled, by what factor is the loudness changed? (d) If the distance in part (b) is cut in half, by what factor is the loudness changed?

College Algebra

7th Edition

ISBN:9781305115545

Author:James Stewart, Lothar Redlin, Saleem Watson

Publisher:James Stewart, Lothar Redlin, Saleem Watson

Chapter1: Equations And Graphs

Section1.10: Modeling Variation

Problem 45E: Loudness of Sound The loudness L of a sound (measured in decibels, dB) is inversely proportional to...

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