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Moin1: 126 There are several machinery in a room and generating a lot of noise. The noise level for different frequency bands are shown in

Moin1:

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126 There are several machinery in a room and generating a lot of noise. The noise level for different frequency bands are shown in this table: (10 points) Freq.{HZ) 125 250 500 1000 2000 4000 Noise Level {dBAJ 115 116 118 121 125 126 The 0.25 in. thick plywood is used as isolation barrier. a. What is the noise level after isolation? b. Is that enough to comply with OSHA requirement

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