One source emits a spherical sound wave uniformly in all directions. a second source emits a hemispherical sound wave, uniformly over all directions only in front of the source. both sources produce same total power. what is the ratio of intensity at some distance from the first source to that at twice that distance in front of second source?

This is a form of winter precipitation. it is frozen precipitation falling as ice pellets. snowflakes melt into raindrops as they pass through a thin layer of warmer air. the raindrops then refreeze into particles of ice when they fall into a layer of sub-freezing air near the surface of the earth. this precipitation is called a) hail. b) rain. c) sleet. d) snow.