Sound waves Bats find their way and search for food by emitting and detecting reflections of ultrasonic waves. Ultrasonic waves are sound waves with frequencies greater than can be heard by humans. A bat emits ultrasound at frequency fbe = 93.67 kHz while flying with a velocity = 12.00 î as it chases a moth that flies with velocity Vm = 6.00 î. S Part a) Calculation question. What frequency do he moth detect? (2.5 marks) Part b) Calculation question. What frequency does the bat detect in the returning echo from the moth?
