In what factors sound can be heard​

Explanation:

Loudness of sound is a measure of response of sound to our ear. Loudness of sound is not simply the energy reaching the human ear, but it also tells about the sensitivity of human ear detecting this energy. Loudness of sound is measured in decibel (dB). As energy reaching the ear depends on square of amplitude, loudness of sound depends on various factors namely,

(i) Amplitude of sound waves

(ii) Sensitivity of ear

(iii) Distance from the source of the sound and the listener.

A source – where the sound is made.

A medium – something for the sound to travel through.

A receiver – something to detect the sound.

since you're a real machine, your ama is always less than your ima, because you can never totally eliminate friction.

answer a fan shaped mass of sediment deposited at the base of a mountain front do to an abrupt change in stream gradient;