A source emitting sound in air at frequency of 1000 Hz recedesfrom an observer with speed 1/5 speed of sound. Air is still.
Calculate wavelength of sound relative to medium nearobserver
If observer moves towards source at a speed of 1/10 speed ofsound, what frequency does he measure?
What is frequency of sound that reflects off of moving theobserver and arrives back at the source where it is detected?