Question 1
What is the Doppler effect?
Question 2
A sound source moves toward a stationary observer. What happens to the observed frequency?
Question 3
A sound source moves away from a stationary observer. What happens to the observed frequency?
Question 4
An observer moves toward a stationary sound source. What happens to the observed frequency?
Question 5
For sound traveling through still air, what happens to the wave speed if the source moves?