\ \ Part B What frequency do you detect if you move with a speed of 24.5 m/s away from the fire truck?

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The predominant frequency of a certain fire trucks siren is $\"\"$ Hz.

Listener is moving with a speed of $\"\"$ m/s.

Speed of the sound is $\"\"$ m/s.

Listener is moving towards fire truck which is at rest.

From the Doppler effect, frequency detected by the listener moving away from the source is $\"\"$ .

Substitute corresponding values in the formula.

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Frequency detected by the listener is $\"\"$ Hz.