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At a painfully loud concert, a 120-dB sound wave travels away from a loudspeaker at 343 m/s.
How much sound wave energy is contained in each 1.0-cm^3 volume of air in the region near this loudspeaker?

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hopemichael95

Answer:

2.9*10^-9 J

Explanation:

Given that sound level is B= 120dB

And B=10log(Io/I)

And I = (10^12)Io

So I = 1W/m²

So to find Energy

∆E= I∆V/v

Where ∆V= 1*10-6m³

v = 343

So ∆E=2.9*10^-9 J after substituting the values

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