Regardless of the frequency of the wave, all sound?
Which of the following is true about sound waves, regardless of their frequency?
A. They travel with the same amount of energy through a given medium.
B. They travel at the same speed through a given medium.
C. They have the same wavelength.
D. They move with the same amplitude.
2 Answers
A. travels with decreasing amount of energy through a given medium. That is why sound is not heard if the distance is long.
B. travels at the same speed through a given medium. Speed depends on the density and elastic property of the medium and since these properties do not change except with temperature, speed remains the same generally.
C. has the same wavelength. Since frequency and speed is the same in a given medium wavelength also remains the same
D. moves with decreasing amount of amplitude. The energy depends on the amplitude. Both amplitude and energy decreases with distance traveled.
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