A spherical source radiates sound uniformly in all directions.At a distance of 13 m, the sound intensity level is 98 dB. Whatpower is radiated by this source?
Answer 3 significant figures In W
The intensity levels of two people's speech are 62.5 dB and 66.5dB, respectively. What is the intensity level of the combinedsounds?
Answer 3 significant figures in dB
A person standing a certain distance from seventeen identicalloudspeakers is hearing a sound level intensity of 127 dB. Whatsound level intensity would this person hear if seven are turnedoff?
Answer 3 significant figures in dB
