A loudspeaker emits sound waves isotropically (uniformly in all directions). The average acoustic power delivered by the loudspeaker is P = 5.00 W . There are two 1. S_av listeners, one is at a distance R =12.0 m , and the other is at a distance R, = 24.0 m. a. What is the intensity of the sound (in W / m² ) at the listener A's position, I ? b. What is the sound level in dB heard by listener A, B, ? c. What is the sound level in dB heard by listener B, B, ?

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A loudspeaker emits sound waves isotropically (uniformly in all directions). The
average acoustic power delivered by the loudspeaker is P a = 5.00 W . There are two
1.
S_av
listeners, one is at a distance R =12.0 m, and the other is at a distance R, = 24.0 m.
a. What is the intensity of the sound (in W / m² ) at the listener A's position, I, ?
b. What is the sound level in dB heard by listener A, B, ?
What is the sound level in dB heard by listener B, B, ?
С.
Transcribed Image Text:A loudspeaker emits sound waves isotropically (uniformly in all directions). The average acoustic power delivered by the loudspeaker is P a = 5.00 W . There are two 1. S_av listeners, one is at a distance R =12.0 m, and the other is at a distance R, = 24.0 m. a. What is the intensity of the sound (in W / m² ) at the listener A's position, I, ? b. What is the sound level in dB heard by listener A, B, ? What is the sound level in dB heard by listener B, B, ? С.
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