Define loudness of a sound wave. Who has a louder voice – a boy or a girl?

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Solution

Loudness is the sound intensity that calculating the amount of energy in sound waves is known as loudness and its S.I unit is decibel.
The loudness of sound depends on the level of noise and intensity of sensation.
The size of Adam’s apple is larger in boys as compared to girls, resulting in strong vocal cords, thus the voice of the boys is louder than the girls.

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Question 2
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