Q: On a cold and frosty night, a jet plane is speeding towards you (stationary) at 162.5 m/sec and sounds its horn at 150 Hz. The outside temperature is -10 degrees Celsius. At what approximate frequency do you hear the horn? The speed of sound at -10 degrees Celsius is 325 m/sec.
A		75 Hz
B		225 Hz
C		1500 Hz
D		300 Hz

Sound | Quantitative Skills |