The decibel rating of a sound is B₂ - B₁ = log, where I is the intensity, in watts per square metre, and I is the minimum intensity of sound audible to the average person, or 10 x 10-¹²W/m² a. Find the decibel rating of a pneumatic drill with an intensity rating of 6.98 x 10 W/m².

Trigonometry (11th Edition)
11th Edition
ISBN:9780134217437
Author:Margaret L. Lial, John Hornsby, David I. Schneider, Callie Daniels
Publisher:Margaret L. Lial, John Hornsby, David I. Schneider, Callie Daniels
Chapter1: Trigonometric Functions
Section: Chapter Questions
Problem 1RE: 1. Give the measures of the complement and the supplement of an angle measuring 35°.
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The decibel rating of a sound is B₂ - B₁ = log, where I is the
intensity, in watts per square metre, and I is the minimum intensity
of sound audible to the average person, or 10 x 10-¹²W/m²
a. Find the decibel rating of a pneumatic drill with an intensity
rating of 6.98 x 10 W/m².
b. The sound of a student whispering in class has a decibel
rating of 26 dB. What is the intensity of the whisper?
Transcribed Image Text:The decibel rating of a sound is B₂ - B₁ = log, where I is the intensity, in watts per square metre, and I is the minimum intensity of sound audible to the average person, or 10 x 10-¹²W/m² a. Find the decibel rating of a pneumatic drill with an intensity rating of 6.98 x 10 W/m². b. The sound of a student whispering in class has a decibel rating of 26 dB. What is the intensity of the whisper?
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