Question

A plane sound wave propagates along the x-axis. At the point x = 0, the loudness level is L_(0) = 60 dB. Find : (a) the loudness level at x = 50 m, (b) the co-ordinates x at which the sound is not heard any more (mu, the absorption coefficient of the medium = 0.04 m^(-1) Audible level of sound = 1 dB)

Answer 1

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