PHYSICS · Subjective · AP · Physics 2: Algebra-based · Waves Sound and Physical Optics · Waves Sound and Physical Optics
Problem
A siren emits a steady tone. Compare the observed frequencies in the following three situations:
(A) The siren moves directly toward a stationary listener at 10 m/s.
(B) The siren is stationary while the listener jogs directly toward it at 5 m/s.
(C) The siren moves directly away from a stationary listener at 10 m/s.
Rank the situations from highest to lowest observed frequency (use the letters A, B, C).