An airplane flying at a constant speed of emits a tone
PHYSICS · Single correct · AP · Physics 2: Algebra-based · Waves Sound and Physical Optics · Waves Sound and Physical Optics
Problem
An airplane flying at a constant speed of 200m/s emits a 1000Hz tone. At a particular instant, the airplane’s velocity is perpendicular to the line joining the airplane and a ground observer. What frequency does the observer hear at that instant? (Take the speed of sound in air to be 340m/s.)
(a) 1176Hz
(b) 1588Hz
(c) 1000Hz
(d) 824Hz