One day when the speed of sound in air is 343 m/s, a fire truck traveling at vs = 33 m/s has a siren which produces a frequency of fs = 440 Hz. Randomized Variables vS = 33 m/s f = 440 Hz a) What frequency, in units of hertz, does the driver of the truck hear? b) What frequency, in units of hertz, does an observer hear when the truck is moving away?
Interference of sound
Seiche
A seiche is an oscillating standing wave in a body of water. The term seiche pronounced saysh) can be understood by the sloshing of water back and forth in a swimming pool. The same phenomenon happens on a much larger scale in vast bodies of water including bays and lakes. A seizure can happen in any enclosed or semi-enclosed body of water.
7) One day when the speed of sound in air is 343 m/s, a fire truck traveling at vs = 33 m/s has a siren which produces a frequency of fs = 440 Hz.
Randomized Variables
vS = 33 m/s
f = 440 Hz
a) What frequency, in units of hertz, does the driver of the truck hear?
b) What frequency, in units of hertz, does an observer hear when the truck is moving away?
Given:-
The speed of the sound is v = 343 m/s
The fire truck traveling with the velocity of
the fire truck produces a frequency of
Find:-
a) What frequency, in units of hertz, does the driver of the truck hear?
b) What frequency, in units of hertz, does an observer hear when the truck is moving away?
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