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, of electromagnetic radiation has average power output of 800 W. The maximum value electric at a distance 4.0 m from the source is:

The light intensity 10 m from a point source is 1000 W/ m^(2) . The intensity 100 m from the same source is

A point source of electromagnetic radiation has an average power output of 800 W . The maximum value of elecvtric field at a distance 4.0 m from the source is

A point source of electromagnetic radiation has an average power output of 800W. (a) Find the maximum value of electric field at a distance 3.5 m from the source. (b) What will be the maximum value of magnetic field? (c) What will be the energy density at a distance at a distance 3.5m from the source?

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

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 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.