A lagoon is to be designed to accommodate an inflow of 0.10 m3/s of nonconservative pollutant having a concentration of 30.0 mg/L and reaction rate constant of 0.25/day. The effluent from the lagoon must have a pollutant concentration of less than 10.0 mg/L. Assuming complete mixing, find the required volume of the lagoon.

More solar radiation is absorbed by earth’s surface than by

In the united states, tornadoes generally occur because of the freezing of ocean water underwater earthquakes meeting of cool and warm air masses shifting of warm and cool ocean currents

The path of a satellite orbiting the earth causes it to pass directly over two tracking stations a and b, which are 51 miles apart. when the satellite is on one side of the two stations, the angles of elevation at a and b are measured to be 87 degrees and 84 degrees, respectively. (a) how far is the satellite from station a? (b) how high is the satellite above the ground?