Question

the shrillness of sound is also called its ​

Answer 1

Answer:

Frequency is related to the pitch of the sound. So higher is the frequency, higher will be the pitch of the sound. Pitch means shrillness in the voice.

Explanation:

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Answer 2

Answer:

it is called Metal shrinks as it transforms from liquid to solid (known as solidification shrinkage) and undergoes additional thermal contraction as it cools to room temperature.

and it is called ductile