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Physics, 22.06.2019 16:30 stodd9503

The sound level near a noisy air conditioner is 70 db. if two such units operate side by side, the sound level near the, would bea. 70dbb. 73 dbc. 105 dbd 140 db

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The sound level near a noisy air conditioner is 70 db. if two such units operate side by side, the s...
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