The wavelength of the sound heard by a stationary listner located est of the truck is 0.332 m
F = fο (V/V - Vs) ,Doppler effect
= 950 (340 / 340 -24) = 1022.25 HZ
λ = V / F = 340 / 1022.25 = 0.332 m
Everything in sound is a vibration. The larynx (voice box) of a person, the string of a guitar, or the loudspeakers on your radio all need to vibrate in order to produce sound. When sound waves move away from their source, vibrating particles knock into other vibrating particles, which in turn causes those other particles to vibrate and knock into still more particles, and so on. Our eardrums vibrate in response to air vibrations, and these vibrations are then transformed into nerve signals and delivered to our brains, which enable us to perceive sound. Similar to this, microphones translate air vibrations into electrical signals after detecting them.
Learn more about sound here:
https://brainly.com/question/13363946
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