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2 years ago

12

A dog whistle is designed to produce a sound with a frequency beyond that which can be heard by humans (between 20,000 Hz and 27

,000 Hz). If a particular whistle produces a sound with a frequency of 25,000 Hz, what is the sound’s speed? Assume the wavelength of this sound wave in air is 0.013m. *
4 points
325 m/s
250 m/s
113 m/s
467 m/s

1 answer:

Viktor [21]2 years ago

7 0

Answer:

Speed of the sound in air is 325 m/s

Explanation:

As we know that the frequency of the sound is given as

$f = 25000 Hz$

wavelength of the sound is given as

$\lambda = 0.013 m$

now we have

$v = \lambda f$

so we have

$v = (0.013)(25000)$

$v = 325 m/s$

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Answer:

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Explanation:

Resistance, R = 20 ohm

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Compare with the standard equation

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Ф = 45°

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Inductive reactance, XL = ωL = 1000 x 0.01 = 10 ohm

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Z = 22.36 ohm

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Ede4ka [16]

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Explanation:

The equation of motion in this situation is:

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Answer:

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