A stationary observer in still air hears the siren of an approaching rescue vehicle…

PHYSICS · Subjective · CBSE · Physics · Waves · Waves

Problem

A stationary observer in still air hears the siren of an approaching rescue vehicle at a frequency of 1.05 kHz, while the siren’s rest frequency is 1.00 kHz. The speed of sound in air is 340 m/s. Calculate the magnitude of the vehicle’s speed.

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