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Lelechka [254]
2 years ago
6

Whoever answers correctly gets brainlist!

Physics
2 answers:
Elenna [48]2 years ago
7 0

Answer: police use infred waves,

radio waves have largest wave length, the

only part of the spectrum seen by humans is visible waves

gamma waves have shortest wave length

Explanation:

UNO [17]2 years ago
5 0

Infared = used by police

gamma = short wavelength

radio = largest wavelength

visible = only ones we can see

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For a stationary siren on a firehouse is blaring at 81Hz. Assume the speed of sound to be 343m/s, the frequency perceived  is mathematically given as'

F=81.721Hz

<h3>What is the frequency perceived by a firefighter racing toward the station at 11km/h?</h3>

Generally, the equation for the doppler effect  is mathematically given as

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In conclusion, the frequency is

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