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The sirens of two ambulances have a freq...

The sirens of two ambulances have a frequency of 500 Hz each. An observer hears the sirem from the two engines, one approaching him with a speed of 18 km/hr and other going away from him at a speed of 36 km/hr. Determine the difference in frequency of two sirens heard by the observer. Take, speed of sound in air = 340 m/s.

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AI Generated Solution

To solve the problem, we will use the Doppler effect formula for sound. The frequency heard by an observer when the source is moving towards or away from them can be calculated using the following formulas: 1. When the source is approaching the observer: \[ f' = f \frac{v + v_0}{v - v_s} \] where: - \( f' \) is the observed frequency, ...
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