Two identical car horns each emit a steady tone of frequency 500 Hz
PHYSICS · Subjective · AP · Physics 2: Algebra-based · Waves Sound and Physical Optics · Waves Sound and Physical Optics
Problem
Two identical car horns each emit a steady tone of frequency 500 Hz. Car A drives directly toward a stationary listener at 20 m/s, while Car B drives directly away from the listener along the same line at 15 m/s. The speed of sound in air is 340 m/s.
Determine the beat frequency heard by the listener.