Johnny has placed two speakers S, and S2 3.20m apart on flat ground. The speakers are vibrating in phase in time producing sound with the same frequency f=400Hz. Each speaker produces a sound output power of 30.0W. Rick is at point R listening to the sound. a.) Find the pressure amplitude of the wave arriving at Rick's position, point R, from speaker 1.
Johnny has placed two speakers S, and S2 3.20m apart on flat ground. The speakers are vibrating in phase in time producing sound with the same frequency f=400Hz. Each speaker produces a sound output power of 30.0W. Rick is at point R listening to the sound. a.) Find the pressure amplitude of the wave arriving at Rick's position, point R, from speaker 1.
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Transcribed Image Text:Johnny has placed two speakers S, and S2
3.20m apart on flat ground. The speakers are
vibrating in phase in time producing sound with
the same frequency f=400HZ. Each speaker
produces a sound output power of 30.0W. Rick is
at point R listening to the sound.
a.) Find the pressure amplitude of the wave
arriving at Rick's position, point R, from speaker
1.
b.) Find the pressure amplitude of the wave
arriving at point R from speaker 2.
c.) What is the difference in phase in degrees of
the waves arriving at point R?
d.) Find the pressure amplitude of the net wave
at point R.
e.) Find the loudness in dB of the net wave
arriving at point R.
f.) What are the two smallest charges in phase in
time for source S, that will make the waves arrive
in phase at R. Give answer in degrees. Explain
reasoning.
Si
1.60m
7.50m
1.60m
4.00rh
R:
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