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A single goose sounds a loud warning when an intruder enters the farmyard. Some distance from...

A single goose sounds a loud warning when an intruder enters the farmyard. Some distance from the goose, you measure the sound level of the warning to be 84 dB . If a gaggle of 22 identical geese is present, and they are all approximately the same distance from you, what will the collective sound level β gaggle be if they all sound off simultaneously? Neglect any interference effects.

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