Water flows through 800 feet of 12-inch diameter iron pipe (? = 0.0018 inches) between 2 open storage tanks, whose water surface elevation difference is 16 feet. The pipe entrance is flush and square edged, and there is a swing check valve and 2- 45° bends in the line. What is the flow rate?
a).1000 GPM
b).2800 GPM
c).4300 GPM
d).6700 GPM