Question

An industrial pollutant enters a small stratified lake through the sewage system. The vertical profile of pollutant concentration is measured in the lake as listed below: Depth (m): 0 1 2 3 4 5 6 7 8 9 Pollutant Conc. (Micromoles/m3): 4.9 5.2 5.1 4.9 3.2 2.9 2.6 2.4 2.1 1.8 The laminar diffusion coefficient of this pollutant in water is 6.5 x 10^-6 cm^2/sec. The vertical flux of the pollutant 7 m below the surface is about: 

          An industrial pollutant enters a small stratified lake through the sewage system. The vertical profile of pollutant concentration is measured in the lake as listed below:

Depth (m): 0 1 2 3 4 5 6 7 8 9 
Pollutant Conc. (Micromoles/m3): 4.9 5.2 5.1 4.9 3.2 2.9 2.6 2.4 2.1 1.8 

The laminar diffusion coefficient of this pollutant in water is 6.5 x 10^-6 cm^2/sec. The vertical flux of the pollutant 7 m below the surface is about:
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Added by Wendy H.

University Physics with Modern Physics
University Physics with Modern Physics
Hugh D. Young 14th Edition
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An industrial pollutant enters a small stratified lake through the sewage system. The vertical profile of pollutant concentration is measured in the lake as listed below: Depth (m): 0 1 2 3 4 5 6 7 8 9 Pollutant Conc. (Micromoles/m3): 4.9 5.2 5.1 4.9 3.2 2.9 2.6 2.4 2.1 1.8 The laminar diffusion coefficient of this pollutant in water is 6.5 x 10^-6 cm^2/sec. The vertical flux of the pollutant 7 m below the surface is about:
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Transcript

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0:00 We have the given qs.
00:01 So our qs will be equal to 5.
00:06 So we have 5m raised to the power of 3 per s.
00:11 We have our cs that is equals to 10 milligrams per litters.
00:17 And we have our qw, which is equal to 0 .5m raised to the power of 3 per s.
00:24 And we have cw that is equal to 100 milligrams per d .e.
00:31 So our qm is equals to the question mark, cm...
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