ambulance.jpg An ambulance traveling down a road at constant…
ambulance.jpg An ambulance traveling down a road at constant speed emits sound waves from its siren of frequency 350 Hz. A person stands on the side of the road with a detector which registers sound waves at a frequency of 450 Hz as the ambulance moves away from them. Assume the speed of sound in air is 343 m/s. a. Calculate the speed at which the ambulance is moving. b. If the ambulance is moving toward the person what is the observed frequency? c. Name the phenomenon that describes the change in frequency observed by the woman. d. Explain one practical application of this phenomenon.