Answer:
the noise level of 5400 flies is equal to 84.32 dB
Explanation:
Noise made by house flies = 47 dB from the distance of 2.4 m
to calculate the noise of 5400 flies at a distance of 2.4 m.
the intensity of noise
[tex]10 log_{10}(\dfrac{I}{I_0}) = 47 dB[/tex]
now, I' = 5400 I₀
= [tex]10 log_{10}(\dfrac{5400 I}{I_0})[/tex]
= [tex]10 [log_{10}[5400] +log_{10}(\dfrac{I}{I_0}))[/tex]
= 10 ( 3.732 + 4.7 )
= 84.32 dB
hence, the noise level of 5400 flies is equal to 84.32 dB
