P6. In a processing plant, turpentine is piped from tanks to cans that are to be sealed and sold to retail outlets. A portion of the pipeline is sketched in Figure. There are 60 m of 12- nominal pipe and 22 m of 8-nominal pipe. All elbows are standard and flanged, and the line is made of schedule 80 wrought iron pipe. Determine the pressure drop pi-p2 if the volume rate of flow is 0.05 m³/s.