Ultrasonic sound is:

A ship produces ultrasonic sound which is collected in 3.42 s after reflection from the surface of sea. If the velocity of ultrasonics is 1531ms^-1 , then what is the distance of sea surface from sea ?

What are the uses of ultrasonic sound?

A bat emits ultrasonic sound of frequency 1000 kHz in air. If the sound meets a water surface, what isthe wavelength of the reflected sound the reflected sound.

A bat emits ultrasonic sound of frequency 1000 kHz in air. If the sound meets a water surface, what is the wavelength of the transmitted sound? Speed of sound in air is 340 m s^-1 and in water 1486 m s^-1 .

A hospital uses an ultrasonic scanner to locate tumours in a tissue. What is the wavelength of sound in the tissue in which the speed of sound is 1.7 km s^-1 ? The operating frequency of the scanner is 4.2 MHz.

A bat is flitting about in a cave, navigating via ultrasonic beeps. Assume that the sound emission frequency of the bat is 40 khz. During one fast swoop directly toward a flat wall surface, the bat is moving at 0.03 timesthe speed of sound in air. What frequency does the bat hear reflected off the wall ?

Will ultrasonic waves show any polarization? Give reasons for your answer.