Bats can detect small insects that are about equal in size to the wavelength of the sound the bat makes with its echolocation system. A bat emits chirps at a frequency of 17.7kHz. Using the speed of sound as 340m/s, what is the smallest insect the bat can detect?
2 answers
wavelength=speedsound/freuency
wavelength = v/f v is the wave speed
f is the frequency
1 kHz = 1000 Hz
340/(17.7*1000)
= 0.0192m
f is the frequency
1 kHz = 1000 Hz
340/(17.7*1000)
= 0.0192m