Question

Find the wavelength λ of the 80.0-khz wave emitted by the bat. express your answer in millimeters.

Answer 1

4.29 millimeters

Step-by-step explanation:

Bats emit ultrasound waves: in air, ultrasound waves travel at a speed of

`v=343 m/s`

The frequency of the waves emitted by this bat is:

`f=80.0 kHz = 80,000 Hz`

Therefore we can find the wavelength of the wave emitted by the bat by using the relationship between speed, frequency and wavelength:

`\lambda=(v)/(f)=(343 m/s)/(80,000 Hz)=4.29\cdot 10^(-3) m=4.29 mm`