Physics, 25.01.2020 01:31, magicallyhello
30 seconds of exposure to 115 db sound can damage your hearing, but a much quieter 94 db may begin to cause damage after 1 hour of continuous exposure. you are going to an outdoor concert, and you'll be standing near a speaker that emits 50 w of acoustic power as a spherical wave. what minimum distance should you be from the speaker to keep the sound intensity level below 94 db?
Answers: 2
) = 94 dB
(take not that Ļ is shown as 
)
Ā (take not that Ļ is shown as 
rearranging the above formula we have intensity (I) = 
I' = reference intensity = 1 x
now substituting all required values into the formula for intensity (I) I = 
= 0.00251 
= 39.8 m ā 40 m
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