The intensity level of sound is measured in decibels (dB). A normal conversation measures 60 dB. To determine the intensity level, L, of a sound in decibels, you can use the formula 1 = 10 log (₁16). 10 where I represents the intensity of the sound in watts per square centimeters (₂). Look at the information in the table to determine how much louder each sound is compared to a normal conversation. Sound Music concert Vacuum Jet Engine W cm² 10-5 10-8 10-2

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