At rush hour the noise from a highway is 104 wm2 with 100
At rush hour, the noise from a highway is 10?4 W/m2 with 100 cars passing a given point a minute. At night the average noise is reduced to 10?6 W/m2. How many cars are now driving on the highway?
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at rush hour the noise from a highway is 104 wm2 with 100 cars passing a given point a minute at night the average
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