A trucking moving at 25m/s emits a 400-Hz signal. Thetemperature that day is 40 o C.
a) Determine the speed of sound at 40o C
Determine the frequency and the wavelength experience by astationary observer, when b) the truck is approaching theobserver.
c) the truck is moving away from the observer.
d) the beat frequency if the observer hears the signal from atruck approaching and the signal from a trucking moving away at25m/s,
e) the average frequency from part (c).
