Question

In: Physics

If 300 m away from an ambulance siren the sound intensity level is 65 dB, what...

If 300 m away from an ambulance siren the sound intensity level is 65 dB, what is the sound intensity level 30 m away from that ambulance siren? Specify your answer in units of decibel (dB).

Expert Solution

Initial distance from the ambulance siren = R₁ = 300 m

Sound level intensity of the ambulance siren at a distance of 300 m = ₁ = 65 dB

Sound intensity of the ambulance siren at a distance of 300 m = I₁

I₁ = 3.162 x 10^-6 W/m²

New distance from the ambulance siren = R₂ = 30 m

Sound intensity of the ambulance siren at a distance of 30 m = I₂

The sound is distributed equally in a spherical manner therefore,

I₂ = 3.162 x 10^-4 W/m²

Sound level intensity of the ambulance siren at a distance of 30 m = ₂

₂ = 85 dB

Sound level intensity of the ambulance siren at a distance of 30 m = 85 dB

genius_generous answered 2 years ago

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