At rush hour the noise from a highway is 104wm2 with 100
At rush hour, the noise from a highway is 10^?4W/m^2 with 100 cars passing a given point a minute. At night the average noise is reduced to 10^?6 W/m^2. How many cars are now driving on the highway.
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at rush hour the noise from a highway is 104wm2 with 100 cars passing a given point a minute at night the average noise
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