the air temperature is 25°C as you sit at a railroad crossing waiting for an apporoaching train. the horn of the train produces sound waves with a frequency of 147 Hz
A: Find the wavelength of that frequency
B: Since the train is approaching the crossing at 0.1 times the speed of sound, the train will travel only ____ in the time it takes the sound wave to travel 2.35 m
C: the second compression is formed _____ behind the first, and the wavelength is now _____
D: what is the frequency at this shorter wavelength
E: as the train moves past you, ____ is added to each wavelength, which is now ____
F: find the frequency of this longer wavelength
G: when you first heard the horn, it sounded as though the frequency were ____; as it passed you, it sounded at ____, and finally it sounded as though it were now ____
H: the actual frequency was ____