Afire truck is equipped with a horn that produces sound waves at a frequency of 1000hz. if the truck is moving at a velocity of 25m/s on a hot summer day with temperature of 40 degrees celcius. a) find the velocity of sound at 40 degree celcius
use this velocity to find the frequency of the sound as heard by an observer when the truck is
b) approaching the observer and
c) moving away from the observer
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Ответ:
Float. This is because water has a density of 1 g/ml, so anything less than this will float.