One violin creates a sound whose intensity level is 60dB. Find the intensity level of 16 violins, each playing at this intensity.

72.04 dB.

Explanation:

The intensity level of 60dB corresponds to the sound intensity given by the equation

where

solving for we get:

Now, when 16 violins are playing the intensity becomes

which on the decibel scale gives

.

Thus, playing 16 violins together gives the intensity level of 72 dB.

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