If you install special sound-reflecting windows that reduce the sound intensity level by 35.0 dB , by what factor have you reduced the sound intensity

5000

Explanation:

Sound intensity is the power carried by the sound wave per unit area. Its unit is W/m². Commonly this intensity is measured on a logarithmic scale known as 'decibel scale'. On the decibel scale, 0 dB is the threshold of hearing. This corresponds to the sound intensity of W/m². For a 10 times increase in the sound intensity decibel value increase by 10. That means,

10 dB = W/m²

By this logic for a reduction in the sound intensity level by 35dB, the sound intensity will be reduced by a factor of 5000.

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