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An employee working in a machine shop is exposed to three different sources which emit noises at 81 dB, 91 dB, and 88 dB. What is the combined noise level exposure?
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An employee working in a machine shop is exposed to three different sources which emit noises at 81 dB, 91 dB, and 88 dB. What is the combined noise level exposure?

User AdamExchange
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Hello,
Please, see the attached file.
Thanks.
An employee working in a machine shop is exposed to three different sources which-example-1
User Mentinet
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