2 years ago

A dog goes for a walk in the neighborhood leaves home and take several displacements as follows. It first head

Physics

1 answer:

Korvikt [17]2 years ago

4 0

Answer:

sorry i couldn't answer your question I tried

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A person hears a siren as a fire truck approaches and passes by. The frequency varies from 480Hz on approach to 400Hz going away

alekssr [168]

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31.2 m/s

Explanation:

$f_{app}$ = Frequency of approach = 480 Hz

$f_{aw}$ = Frequency of going away = 400 Hz

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Frequency of approach is given as

$f_{app} = \frac{Vf}{V - v}$ eq-1

Frequency of moving awayy is given as

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Dividing eq-1 by eq-2

$\frac{f_{app}}{f_{aw}} = \frac{V + v}{V - v}$

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$v$ = 31.2 m/s

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