https://www.physicsclassroom.com/science-reasoning/sounds-waves/sound-intensity-and-decibel-system/about
The Physics Classroom's Science Reasoning Center provides science teachers and their students a collection of cognitively-rich exercises that emphasize the...
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https://www.physicsclassroom.com/Class/sound/u11l2b.html
The amount of energy that is transported by a sound wave past a given area of the medium per unit of time is known as the intensity of the sound wave....
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