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4. Two speakers, source A and source B, are emitting identical coherent and monotone sounds with an average power of 1.00 W. Speaker B is d= 4.00 m to the right of speaker A. Point Q is x = 2.00 m to the right of speaker B. The density of the air is 1.23 kg/m and the bulk modulus is 1.45 x 10° N/m2. Ignore reflections. The threshold of hearing is I, = 10-12 w/m². В k d – x- a. Calculate the sound level of the sound from speaker A at point Q. b. Calculate the sound level of the sound from speaker B at point Q. c. Calculate the speed of sound in air. d. What is the lowest frequency for which constructive interference occurs at point Q? e. What is the lowest frequency for which destructive interference occurs at point Q?

4. Two speakers, source A and source B, are emitting identical coherent and monotone sounds with an average power of 1.00 W. Speaker B is d= 4.00 m to the right of speaker A. Point Q is x = 2.00 m to the right of speaker B. The density of the air is 1.23 kg/m and the bulk modulus is 1.45 x 10° N/m2. Ignore reflections. The threshold of hearing is I, = 10-12 w/m². В k d – x- a. Calculate the sound level of the sound from speaker A at point Q. b. Calculate the sound level of the sound from speaker B at point Q. c. Calculate the speed of sound in air. d. What is the lowest frequency for which constructive interference occurs at point Q? e. What is the lowest frequency for which destructive interference occurs at point Q?

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Need help with parts 4d and 4e pls

4. Two speakers, source A and source B, are emitting identical coherent and monotone sounds with an average power of 1.00 W. Speaker B is d= 4.00 m to the right of speaker A. Point Q is x = 2.00 m to the right of speaker B. The density of the air is 1.23 kg/m and the bulk modulus is 1.45 x 10° N/m2. Ignore reflections. The threshold of hearing is I, = 1012 W/m?. A B d a. Calculate the sound level of the sound from speaker A at point Q. b. Calculate the sound level of the sound from speaker B at point Q. c. Calculate the speed of sound in air. d. What is the lowest frequency for which constructive interference occurs at point Q? e. What is the lowest frequency for which destructive interference occurs at point Q?
Transcribed Image Text:4. Two speakers, source A and source B, are emitting identical coherent and monotone sounds with an average power of 1.00 W. Speaker B is d= 4.00 m to the right of speaker A. Point Q is x = 2.00 m to the right of speaker B. The density of the air is 1.23 kg/m and the bulk modulus is 1.45 x 10° N/m2. Ignore reflections. The threshold of hearing is I, = 1012 W/m?. A B d a. Calculate the sound level of the sound from speaker A at point Q. b. Calculate the sound level of the sound from speaker B at point Q. c. Calculate the speed of sound in air. d. What is the lowest frequency for which constructive interference occurs at point Q? e. What is the lowest frequency for which destructive interference occurs at point Q?
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