A source is moving with constant speed m/s towards a stationary observer due east of…
PHYSICS · Single correct · A Level · Physics · Waves · Waves
Problem
A source is moving with constant speed vs=20 m/s towards a stationary observer due east of the source. Wind is blowing at the speed of 20 m/s at 60∘ north of east. The source has frequency 500 Hz. Speed of sound = 300 m/s. The frequency registered by the observer is approximately
(1) 541 Hz
(2) 552 Hz
(3) 534 Hz
(4) 517 Hz