Question

Ethanol with a density of 789 kg/m3 moves through a constricted pipe in steady, ideal flow. At the lower point shown in the figure below, the pressure is P1 = 1.90 ✕ 10^4 Pa, and the pipe diameter is 8.00 cm. At another point y = 0.40 m higher, the pressure is P2 = 1.05 ✕ 10^4 Pa and the pipe diameter is 4.00 cm. A tube is open at both its left and right ends. The tube starts at the left end, extends horizontally to the right, curves up and to the right, and extends horizontally to the right again. The right end is higher than its left end, and the change in height is labeled y. The pressure at the left end is labeled P1, and the pressure at the right end is labeled P2.

(a) Find the speed of flow (in m/s) in the lower section. (b) Find the speed of flow (in m/s) in the upper section. m/s (c) Find the volume flow rate (in m3/s) through the pipe.

Answer 1