A court case involving pipeline damage hinges on knowing the flow rate at the time of valve closure. A simple surge tank was operational in a 1,500-m-long pipeline to protect a turbine, but the flow gauge had malfunctioned. The pipeline is 2 min diameter and made of rough concrete. If a 5-mrise was measured in a 10-m-diametersurge tank, what was the flow rate in the pipeline when the water was suddenly stopped? (Hint: Assume complete turbulence in the pipeline.)