Solution Found!
Unless indicated otherwise,
Chapter 16, Problem 20E(choose chapter or problem)
Problem 20E
Unless indicated otherwise, assume the speed of sound in air to be v = 344 m/s.
The intensity due to a number of independent sound sources is the sum of the individual intensities. (a) When four quadruplets cry simultaneously, how many decibels greater is the sound intensity level than when a single one cries? (b) To increase the sound intensity level again by the same number of decibels as in part (a), how many more crying babies are required?
Questions & Answers
QUESTION:
Problem 20E
Unless indicated otherwise, assume the speed of sound in air to be v = 344 m/s.
The intensity due to a number of independent sound sources is the sum of the individual intensities. (a) When four quadruplets cry simultaneously, how many decibels greater is the sound intensity level than when a single one cries? (b) To increase the sound intensity level again by the same number of decibels as in part (a), how many more crying babies are required?
ANSWER:Solution 20E
(a).The sound level intensity as function of intensity of source is given as
Where
Sound intensity level of sound if four quadruplets cry simultaneously
)
)
From above two equation calculate difference in sound intensity level
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