A ships horn can be heard above typical background noise if, Physics

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A ships horn can be heard above typical background noise if

a ship's horn can be heard above typical background noise if at intensity level 20 dB.

a) what must be the power of the horn's output to achive this level at 5.0 km away?

b) how many identical ship horns would be needed to raise the level to 30 dB at 5.0 km?

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Physics: A ships horn can be heard above typical background noise if

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Physics: A ships horn can be heard above typical background noise if

Reference No:- TGS0644265

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