Question

Bats use ultrasound in echolocation. This sound is characterized by _____.



low frequency

low amplitude

high frequency

high amplitude

Answer 1

A galloping pony speeds past you at 5 m/s. The frequency of the sound produced by the hooves on the dirt is 221 Hz. Assume the speed of sound to be 342 m/s. What is the observed frequency of the hooves after the pony has passed your position?



218 Hz

226 Hz

216 Hz

224 Hz

Answer 2

high frequency

Answer 3

frequency at receiver F.R. is given as, F.R. = fs*C/(C+Vs) = 221*342/(342+5)=218

Answer 4

thanks :)

Answer 5

:)