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Author Question: Two harmonic sound waves reach an observer simultaneously. The observer hears the sound intensity ... (Read 109 times)

jerry coleman

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on: Jul 29, 2018
Two harmonic sound waves reach an observer simultaneously. The observer hears the sound intensity rise and fall with a time of 0.200 s between the maximum intensity and the succeeding minimum intensity.
 
  What is the difference in frequency of the two sound waves?
  A) 10.0 Hz
  B) 0.200 Hz
  C) 5.00 Hz
  D) 2.50 Hz
  E) 1.25 Hz

Question 2

Two loudspeakers placed 6.0 m apart are driven in phase by an audio oscillator whose frequency range is to A point P is located from one loudspeaker and 3.6 m from the other.
 
  The speed of sound is 344 m/s. The frequency produced by the oscillator, for which constructive interference of sound occurs at point P, is closest to
  A) 2580 Hz.
  B) 2903 Hz.
  C) 2473 Hz.
  D) 2795 Hz.
  E) 2688 Hz.


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Sierray

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Reply #1 on: Jul 29, 2018
Answer to Question 1

Answer: D

Answer to Question 2

Answer: A


jerry coleman

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Reply 2 on: Jul 29, 2018
:D TYSM

sultana.d

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Reply 3 on: Yesterday
Gracias!

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