a. A vacuum cleaner has a relative intensity of 80 decibels. What is the intensity of 2 vacuum cleaners running together? b. What is the intensity of 3 vacuum cleaners running together?
a. A vacuum cleaner has a relative intensity of 80 decibels. What is the intensity of 2 vacuum cleaners running together? b. What is the intensity of 3 vacuum cleaners running together?
College Physics
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ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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How to find the intensity for this promblem please?
Transcribed Image Text:a. A vacuum cleaner has a relative intensity of 80
decibels. What is the intensity of 2 vacuum cleaners
running together?
b. What is the intensity of 3 vacuum cleaners running
together?
Expert Solution
Step 1
a) intensity level = 10 log(I/I0) = 80
for two vaccum cleaner intensity level
= 10 log(2I/I0) = 10log2 + 80
= 83.01 dB
b) for three vaccum cleaners intensity level
= 10 log(3I/I0) = 10log3 + 80
= 84.77 dB
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