Question

A sound wave from a siren has an intensity of 100.0 point, what the sound intensity level of the sound?

Answer 1

Sound intensity level of the sound = 140 dB

Step-by-step explanation:

We have expression for sound intensity level

`L=10log_(10)\left ( (I)/(I_0)\right )`

We have sound intensity, I = 100 W/m²

I₀ = 10⁻¹² W/m²

We need to find sound intensity level

Substituting

`L=10log_(10)\left ( (I)/(I_0)\right )=10log_(10)\left ( (100)/(10^(-12))\right )=10x14=140dB`

Sound intensity level of the sound = 140 dB