Sound level: If the intensity level at distance d of one trombone is 70 dB, what is the intensity level of 76 identical trombones, all at distance d?
A) 146 dB
B) 89 dB
C) 5320 dB
D) 76 dB
E) 82 dB

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The Answer of Sound level: If the intensity level at distance d of one trombone is 70 dB, what is the intensity level of 76 identical trombones, all at distance d?
A) 146 dB
B) 89 dB
C) 5320 dB
D) 76 dB
E) 82 dB

Sound Level: If the Intensity Level at Distance D of One