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Answer:
1st answer
The vibratory motion is mean by the object vibrate is called vibratory motion.
Answer:
1.The motion in which certain part or parts of a body always remain fixed and do not move while the rest of the body moves to and fro in a definite style is called vibratory motion.
2.Sound is produced when an object vibrates, creating a pressure wave. This pressure wave causes particles in the surrounding medium (air, water, or solid) to have vibrational motion. ... The human ear detects sound waves when vibrating air particles vibrate small parts within the ear.
3.Humans can detect sounds in a frequency range from about 20 Hz to 20,000Hz.
4.INFRASONIC. Pertaining to VIBRATIONs and SOUND WAVEs whose FREQUENCY is too low to be heard as sound by the human ear, i.e. below about 20 Hz.
5.Bats catch insects continuously using echolocation, an advanced navigation system. The bat emits ultrasonic waves with very high frequencies. ... Their sounds are reflected in the environment, hitting various objects and returning to the bat as echoes.
6. the pitch of sound depends upon its frequency.