A rock group is playing in a club. Sound emerging outdoors from an open door spreads uniformly in all directions. If the decibel level is 60 dB at a distance of 0.80 m from the door, at what distance is the music just barely audible to a person with a normal threshold of hearing? absorption. Answer in units of m. Disregard 1 | 2 | 3 | 4 | 5 * indicates a slide with a question t