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An automobile is moving at 30.0 m/s and is driving towards a whistle that indicates it...

An automobile is moving at 30.0 m/s and is driving towards a whistle that indicates it is
lunch time at a factory; the whistle has a frequency of 50 Hz.
(a) If the speed of sound in air is 340 m/s, what is apparent frequency of the whistle as heard by the driver?
(b) Repeat for the case of the car leaving the factory at the same speed.

On a set of highland bagpipes, there are two tenor drones (the third one is called the bass
drone). The tenor two drones have to be tuned together, that is to be the same frequency. If the frequency of one drone is 478 Hz and the other is 481 Hz, what is the beat frequency? When is the beat frequency zero?

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Answer #1

340+3o) La ASR匹 ー50 (340 LI

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