FYKOS Year 28 Series 5 Problem 2 — I hear well, I can't say · FYKOS 28 #28.5.2

Physics · mechanics

Problem

At a distance d=5  md=5\;\mathrm{m} from a point-like source of sound we hear a noise of the level of intensity L1=90dBL_{1}=90dB. At what distance from the source of the sound is the level of intensity of the sound L2=50dB?L_{2}=50dB?

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