Question

12 of 15 Constants The predominant frequency of a certain fire truck's siren is 1500 Hz when at rest.

Answer 1

The detect frequency is 1622.72 Hz.

Step-by-step explanation:

Given that,

Frequency = 1500 Hz

Suppose you move with a speed of 27.0 m/s toward the fire engine. what frequency do you detect ?

We need to calculate the frequency

Using formula of frequency

`f=((v+v_(0))/(v))f_(0)`

Where, v = speed of sound

v₀ = speed of source

f₀ = frequency of siren

Put the value into the formula

`f=(330+27.0)/(330)*1500`

`f=1622.72\ Hz`

Hence, The detect frequency is 1622.72 Hz.