A breathing sphere of radius 0.1m radiates spherical waves into air at 100Hz with an intensity of 200mW/m2 at the distance 0.5m from the center of the sphere. In this case,
1) Compute the radiated acoustic power.
2) Compute the intensity at the surface of the sphere.
3) Compute the intensity at the distance 1m from the center.
(1) 200π mW (2) 10W/m2 (3) 50mW/m2
(1) 400π mW (2) 5W/m2 (3) 100mW/m2
(1) 100π mW (2) 10W/m2 (3) 25mW/m2
(1) 200π mW (2) 5W/m2 (3) 200mW/m2
(1) 200π mW (2) 5W/m2 (3) 50mW/m2