At a distance `20 m` from a point source of sound the loudness level is `30 dB`. Neglecting the damping, find
(a) the loundness at `10 m` from the source
(b) the distance from the source at which sound is not heard.

At a distance r_(0) = 20 m form an isotropic point source of sound the loudness level is L_(0) = 30 dB . Neglicting the damping of the sound wave, find : (a) the loudness level at a distacne r = 10 m form the source, (b) the distance form the source at which sound is not heard.

Explain why the loudness of a sound note varies with the distance from the source of sound

At a distance of 5.0 m from a point sound source, the sound intensity level is 110 dB. At what distance is the intensity level 95 dB?

At a distance of 20m from a point source, the loudness is 30dB . After a minimum distance of k ( 300 sqrt(10) ) m the sound is inaudible. Value of k is

Intensity of sound at a point is its distance from the source

A plane sound wave propagates along the x axis . The damping coefficient of the wave is gamma=0.0230 m^(-1) . At the point x=0 the loudness level is L=60 dB . Find : (a) the loudness level at a point with coordinate x=50 m , (b) the coordinate x of the point at which the sound is not heard any more.

A point source emits sound waves with an average power output of 80.0 W (a) Find the intensity 3.00 m from the source. (b) find the distance at which the intensity of the sound is 1.00xx10^-8(W)/(m^2)

A point source emits sound waves with an average power output of 80.0 W (a) Find the intensity 3.00 m from the source. (b) find the distance at which the intensity of the sound is 1.00xx10^-8(W)/(m^2)