IL-2 101 speakers with a spacing of one meter between adjacent speakers form a line 100m long on the ground along the x axis. The loudness of the sound at point P 2m above the origin is 120dB. a) Draw the wavefront arriving at point P on a figure like the one shown to the right. b) Find the intensity of the sound at point P assuming that all sound energy goes into the cylindrical part of the wavefront. c) Find the total power of all of the speakers. line of speakers 2m 50.0m 50,0m

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IL-1 =0.0746W/m", B=109DB
IL-2 a) See problem IP-2 b) 1W/m c) 628W
IL-3 a) I=9.55x102W/m, B=110DB, Pm-9.20N/m b)I=1.06x102W/m?, B-100dB, Pm-3.07N/m
Pm2 = 0.333,
c) 2=3.00,
R,
IL-4 a) See problem P-1, part c) b) 0.0707W c) 2.11N/m2 d) 97.0dB e) 1.0310
=0.111, and 쓰-0.909
Int
Pmt
:
m0.02
0.08
Transcribed Image Text:IL-1 =0.0746W/m", B=109DB IL-2 a) See problem IP-2 b) 1W/m c) 628W IL-3 a) I=9.55x102W/m, B=110DB, Pm-9.20N/m b)I=1.06x102W/m?, B-100dB, Pm-3.07N/m Pm2 = 0.333, c) 2=3.00, R, IL-4 a) See problem P-1, part c) b) 0.0707W c) 2.11N/m2 d) 97.0dB e) 1.0310 =0.111, and 쓰-0.909 Int Pmt : m0.02 0.08
he
IL-2 101 speakers with a spacing of one meter between adjacent
speakers form a line 100m long on the ground along
the x axis. The loudness of the sound at point
P 2m above the origin is 120dB.
a) Draw the wavefront arriving at point P on
figure like the one shown to the right.
b) Find the intensity of the sound at point P
assuming that all sound energy goes into the
cylindrical part of the wavefront.
c) Find the total power of all of the speakers.
y
lịne of speakers
2m
a
50.0m
50,0m
Transcribed Image Text:he IL-2 101 speakers with a spacing of one meter between adjacent speakers form a line 100m long on the ground along the x axis. The loudness of the sound at point P 2m above the origin is 120dB. a) Draw the wavefront arriving at point P on figure like the one shown to the right. b) Find the intensity of the sound at point P assuming that all sound energy goes into the cylindrical part of the wavefront. c) Find the total power of all of the speakers. y lịne of speakers 2m a 50.0m 50,0m
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