L=10 log₁₀ (I/I₀)
I₀= 10⁻¹² W/m²
I/I₀ = 10^(L/10)
I= I₀•10^(L/10) =
=10⁻¹²•10^(130/10)=10 W/m²
I₁ = I/19=10/19= 0.53 W/m²
L=10 log₁₀ (I₁/I₀) =
=10 log₁₀ (0.53/ 10⁻¹²)=144.7 dB
19 cars in a circle at a boom box competition produce a 130 dB sound level at the center of the circle. What is the average sound level(dB) produced there by each, assuming interference effects can be neglected?
Please someone help me to solve this problem. Thanks a lot.
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