Question

The sound emitted from the siren of an ambulance has frequency of 1500Hz. The speed of sound is 340m/s. Calculate the difference in frequencies heard by a stationary observer it the ambulance initially. travels towards and then away from the observer at a speed of 30m/s.

Answer 1

Answer:

When the air columns in two pipes closed at one end of lengths 62 cm and 63 cm

are vibrating in fundamental mode, 7 beats are heard in 3 second. Neglecting end

correction, calculate velocity of sound in air.

Answer 2

Explanation:

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