A machine shop has 100 equally noisy machines that together
A machine shop has 100 equally noisy machines that together produce an intensity level of 90db. If the intensity level must be reduced to 80db, how many machines must be turned off?
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concentrated sulfuric acid is used as a catalyst for the esterification of acetic acid in the preparation of isopentyl
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a machine shop has 100 equally noisy machines that together produce an intensity level of 90db if the intensity level
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a steel wire with mass218g and length16m is strung on a bass so that the distance from the nut to the bridge is 110 ma
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