Question

Answer the question 6 and 7 ...

Plz don't copy paste from google.Give your own answer and don't give unwanted answer.
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Answer 1

When a disturbance is created on an object, it starts vibrating and sets the particles of the medium to vibrate. The particle of the medium is displaced from its mean position and exerts a force on the adjacent particle. As a result, the adjacent particle is disturbed from its mean position and the original particle comes back to rest. This process continues till the disturbance reaches our ear.