The Beat Detected On A Moving Platform Mastering Physics
Need help mastering physics as soon as possible? 3
The speaker mounted on the mobile platform leans against the wall and emits a constant tone with a frequency of 235 Hz.
w Does the platform have to move fast to detect 2.00 Hz plus, Vp?
Take the soil SD at 344 m / sec.
The person hears the 235 Hz tone as well as the reflex sound, which is close to twice the frequency of the Vp, because the sound waves are shifted Doppler through the Vp and the person is still moving in the sound reflected in the Vp. doing.
Frequency difference 235 * s / (s 2 * v) 1} = 2 Hz (standard Doppler equation)
Where s = 344 m / s
Find the number.
Or, since you both know the frequency:
Vp = v (f / fo 1) ===> Vp = s (237/235 1) ===> ???
But ... remember that the calculated speed is dual SD platform. I understand that?