Distinguish between infrasonic and ultrasonic . Give short answer
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The sounds of frequency less than 20Hz are called infrasonics. The infrasonic soundshave below the lower limit of human hearing. The sound of frequency more than 20,000Hz are called ultrasonics. ultrasonic soundshave a frequency above the upper limit of human hearing.
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Answer:
Explanation:
When an object falls freely towards the ground, its potential energy decreases and kinetic energy increases.
As the object touches the ground, all its potential energy gets converted into kinetic energy.
As the object hits the hard ground, all its kinetic energy gets converted into heat energy and sound energy.
It can also deform the ground depending upon the nature of the ground and the amount of kinetic energy possessed by the object.
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