At a distance of 5 m next to the road, the sound level produced by traffic is measured to be 85 dB. Suppose sound propagates over the surface of a half-cylinder. What is the sound level at a distance of 45 m from the road? Express the result in whole decibels.
At a distance of 5 m next to the road, the sound level produced by traffic is measured to be 85 dB. Suppose sound propagates over the surface of a half-cylinder. What is the sound level at a distance of 45 m from the road? Express the result in whole decibels.
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At a distance of 5 m next to the road, the sound level produced by traffic is measured to be 85 dB. Suppose sound propagates over the surface of a half-cylinder. What is the sound level at a distance of 45 m from the road? Express the result in whole decibels.
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