The interference of two sound waves of similar amplitude but slightly different frequencies produces a loud-soft-loud oscillation we call __

Question

The interference of two sound waves of similar amplitude but slightly different frequencies produces a loud-soft-loud oscillation we call __________.
a. the Doppler effect
b. vibrato
c. constructive and destructive interference
d. beats

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Trung Dũng 4 years 2021-08-19T05:49:49+00:00 1 Answers 12 views 0

Answers ( )

  1. quangkhai
    0
    2021-08-19T05:51:34+00:00
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    Answer:

    the correct answer is d Beats

    Explanation:

    when two sound waves interfere time has different frequencies, the result is the sum of the waves is

           y = 2A cos 2π (f₁-f₂)/2    cos 2π (f₁ + f₂)/2

    where in this expression the first part represents the envelope and the second part represents the pulse or beatings of the wave.

    When examining the correct answer is d Beats

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