The following information was recorded on August 12, 2011 at 10 p.m.: Wind Speed at 75m =...

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Advance Math

The following information was recorded on August 12, 2011 at 10p.m.:
Wind Speed at 75m = 10.8 m/s
Wind Direction at 75 m = 120 ^o
Sigma Theta at 75 m = 9.2 ^o
Atmospheric Temperature = 21.2 ^oC
Stack Exit Temperature = 200 ^oC
Stack Height = 75 m
Stack Diameter = 0.2 m
Stack Exit Velocity = 10.2 m/s
Source Strength = 100 g/s
Air Contaminant = VOC

Plot C _u/Q versus downwind distance under night-timeconditions and compare your results with calculations usingday-time conditions. Use sigmas from Problem 4. Choose the one ofthe following statement using your results:
In general, night-time concentrations are the same as day-timeconditions.
In general, day-time concentrations are higher than thenight-time concentrations.
In general, night-time concentrations are higher than theday-time concentrations.
None of the above.

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3.6 Ratings (277 Votes)

GivenWind Speed at 75m 108 ms uWind Direction at 75 m 120 oSigma Theta at 75 m 92 oAtmospheric Temperature 212 oCStack Exit Temperature 200 oCStack Height 75 mStack Diameter 02 mStack Exit Velocity 102 ms VsSource Strength 100 gsAir Contaminant VOCAnswer 1Check for downwashVs u See Answer

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		In general, night-time concentrations are the same as day-timeconditions.
		In general, day-time concentrations are higher than thenight-time concentrations.
		In general, night-time concentrations are higher than theday-time concentrations.
		None of the above.