The intensity of sound decreases four times as the distance between the ear and sound source is doubled because the intensity of sound is inversely proportional to the square of the distance between the...
Ultrasonic waves The ultrasonic waves are used to detect the presence of flaws in the form of cracks, blowholes, porosity in metallic pipes as those used in conveying the natural gas or parts of...
The bats Some animals use echoes to locate and identify the objects, The echolocation is used for navigation and for foraging (hunting) in various environments, The bats can use the phenomenon of sound reflection...
