In the afternoon, the decibel level of a busy freeway is 85 dB with 90 cars...
In the afternoon, the decibel level of a busy freeway is 85 dB with 90 cars passing a given point every minute. Late atnight, the traffic flow is only 8 cars per minute. What is the late-night decibel level?
Homework Answers
Solution)
Here,
Sound intensity has decreased by a factor of 11.25,
Hence,
We know,
Δβ = 10 log (1/11.25) = -10.51 dB
So,
New decibel level = 85 dB - 10.51dB = 74.48 dB
============
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