A 520 Hz tuning fork is struck and held next to a stationary listener on the side of…
PHYSICS · Single correct · AP · Physics 2: Algebra-based · Waves Sound and Physical Optics · Waves Sound and Physical Optics
Problem
A 520 Hz tuning fork is struck and held next to a stationary listener on the side of a road. A car with a horn that has a rest frequency of 500 Hz passes by at 30 m/s. The speed of sound is 340 m/s. What beat frequency will the listener hear immediately after the car has passed?
(a) 30Hz
(b) 20Hz
(c) 60Hz
(d) 64Hz