After singing for a few minutes the soloist rejoins the choir a second choir, consist of 90 additional singers then joins in each group of 10 singers sings with the same intensity as the first 10 person choir now how many decibels of sound intensity as the first 10 person choir now how many decibels of sound intensity are being produced
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After singing for a few minutes the soloist rejoins the choir a second choir, consist of 90 addition...
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