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elena-s [515]
2 years ago
6

When the voltage is

Physics
1 answer:
gizmo_the_mogwai [7]2 years ago
7 0

Explanation:

ask to nirajan shrestha

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A motorcycle and a police car are moving toward one another. The police car emits sound with a frequency of 523 Hz and has a spe
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To solve this problem it is necessary to apply the concepts related to Dopler's Law. Dopler describes the change in frequency of a wave in relation to that of an observer who is in motion relative to the Source of the Wave.

It can be described as

f = \frac{c\pm v_r}{c\pm v_s}f_0

c = Propagation speed of waves in the medium

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v_s= Speed of the source relative to the medium

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The sign depends on whether the receiver or the source approach or move away from each other.

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Replacing we have that

f = \frac{c + v_r}{c - v_s}f_0

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f = 601.7Hz

Therefore the frequency that hear the motorcyclist is 601.7Hz

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