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The _______ of a sound wave is defined as the amount of energy passing through a unit area of the wave front in a unit of time.

Aintensity
Bfrequency
Camplitude
Dcompression

Verified Answer :

The correct answer is sound intensity: answer A.

Sound intensity is the amount of energy that passes through certain area, and it is measured in watt (the energy) by square meters (the area) : W/m².

It's also known under another name, acoustic intensity.

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