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Dmitrij [34]
3 years ago
6

Which statement does NOT explain the concept of the Doppler Effect? A. As an observer moves away from a stationary sound, the so

und waves are stretched making the pitch lower. B. As an observer approaches a stationary sound, the sound waves are compressed, making the pitch higher. C. As a sound source approaches a stationary object, the sound waves are compressed, making the pitch higher. D. As a sound source moves away from a stationary object, the sound waves are compressed, increasing the pitch.
Physics
1 answer:
Nookie1986 [14]3 years ago
4 0

Answer:

  D

Explanation:

When the sound is moving away from the stationary object the pitch decreases according to the Doppler Effect.

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Given the data in the question;

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b) What is the period of her up-and-down motion?

we know that the relationship between frequency, wavelength and wave speed is;

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we substitute

T = 26 m / 4 m/s

T = 6.5 s

Therefore, the period of her up-and-down motion is 6.5 s

 

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