1. The pressure on the upstream side of a sudden contraction (D = 60 cm) is 285 and 265 kPa on the downstream side (D = 30 cm). Determine the flow rate in the horizontal pipeline that contains this...

1. The pressure on the upstream side of a sudden contraction (D = 60 cm) is 285 and 265 kPa on the downstream side (D = 30 cm). Determine the flow rate in the horizontal pipeline that contains this sudden contraction.

2. Water flows through a 4-cm, wrought iron, horizontal pipeline from point A to point B. The pipeline is 50 meters long and contains a fully open gate valve and two elbows (R/D = 4). If the pressure at B (downstream) is 192 kPa and the flow rate is 0.006 m³/s, determine the pressure at point A.