Asked by enrique
An
approaching
train
produces
the
RP1
signal
(attention
signal)
at
600 Hz .
The
train
moves
with
the
speed
of
120 km/h. What
is
the
frequency and
the
wavelength
of
the
sound
detected by a person standing next to the track?
detected by a person standing next to the track?
Answers
Answered by
Henry
Vt=120000m/h = 120000m/3600s = 33.33 m/s
Fp = ((Vs+Vp)/(Vs-Vt))*Ft
Fp = ((343+0)/(343-33.33))*600 Hz
Fp = (343/309.7)*600 = 664.6 Hz = Freq.
heard by the person.
L = Vs/Fp = 343/664.6 = 0.516 m. = Wave-
length.
Fp = ((Vs+Vp)/(Vs-Vt))*Ft
Fp = ((343+0)/(343-33.33))*600 Hz
Fp = (343/309.7)*600 = 664.6 Hz = Freq.
heard by the person.
L = Vs/Fp = 343/664.6 = 0.516 m. = Wave-
length.
There are no AI answers yet. The ability to request AI answers is coming soon!
Submit Your Answer
We prioritize human answers over AI answers.
If you are human, and you can answer this question, please submit your answer.