Four identical machines are running at the same time. The
measured sound level is 98 dBA. What would the sound level be when
2 machines are running? And when just one is running?
Four identical machines are running at the same time. The measured sound level is 98 dBA. What would the sound level be
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answerhappygod
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Four identical machines are running at the same time. The measured sound level is 98 dBA. What would the sound level be
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