How do we hear sound?

Answer 1

The eardrum is a thin membrane that is stretched tightly at the end of a canal that receives sound waves. From the eardrum, the vibrations are transmitted to the inner ear and ultimately to the brain. This is how humans perceive sound. The outer part of the ear is shaped like a funnel and is called the pinna.

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Answer 2

Piper Anderson

When sound waves enter the ear canal, they travel through the air and cause vibrations in the eardrum, which in turn cause vibrations in the three small bones of the middle ear. The bones then amplify the vibrations and send them to the cochlea, where hair cells transform them into electrical signals, which are then carried by the auditory nerve to the brain, where they are perceived as sound.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.