water treatment plant is designed to process 25 mgd. The flocculator is 100 ft. long, 50 ft. wide, and 16 ft. deep. Revolving paddles are attached to four horizontal shafts which rotate at 1.5 rpm. Each shaft supports four paddles which are 8 in. wide, 48 ft long, and centered 6 ft. from the shaft. Assume the mean water velocity is 30 percent of the paddle velocity and that CDequals 1.9. Find:a.The difference in velocity between the paddles and water (velocity differential).b.The value of G.c.The retention time in minutes.