When an ambulance is stationary the siren gives off a sound


When an ambulance is stationary, the siren gives off a sound at a frequency of 500 Hz. In answering the following questions assume that the speed of sound is 340 m/s. What is the frequency of the stationary siren as perceived by an observer in a car driving toward the ambulance at 25 m/s?

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Physics: When an ambulance is stationary the siren gives off a sound
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