We hear sound because sound waves entering our ears and cause the ear drums to vibrate. The vibrations are then
along tiny bones of the middle ear and converte
which are processed by the cortex.
sound
wave
radio waves
nerve signals
mechanical sign

Explanation:

Sound waves vibrate the ear drum and along the middle ear these viberations are converted into nerve signals.

the working equation for the angular size is the product of the physical size and 360 degrees divided by the product of two pi and distance from earth. the minimum size would be 0.559 degrees while the maximum size would be 0.49 degrees.