A point A is located at a distance r=1.5 m from a point source of sound of frequency 600 Hz. The power of the source is 0.8 W. Speed of sound in air is 340 m/s and density of air is 1.29 kg/m3 . Find at the point A ,
a. the pressure oscillation amplitude (Δp)m
b. the displacement oscillation amplitude A .