Question

01 points Previous Answers SerCP119.7.P.046. Water is pumped through a pipe of diameter 14.5 cm from the Colorado River up to Grand Canyon Village, on the rim of the canyon. The river is at 564 m elevation and the village is at 2102 m. (a) At what minimum pressure must the water be pumped to arrive at the village? (The density of water is 1.00 x 10 kg/m.) 15072400 X Your response offers significantly from the correct answer. Rework your solution from the beginning and check each step carefully. MPa (b) If 3900 m are pumped per day, what is the speed of the water in the pipe? 173.62 X Your response differs significantly from the correct answer. Rework your solution from the beginning and check each step carefully. m/s (C) What additional pressure is necessary to deliver this ow? Note: You may assume that the free fall acceleration and the density of air are constant over the given range of elevations. 15071.95 Your response differs significantly from the correct answer. Rework your solution from the beginning and check each step carefully. kPa Need Help? Padre Submit Anse Practice Another Version 2. 0.50 points Previous Answers SerCP11 9.A.P.080. Take the density of blood to be p and the distance between the feet and the heart to be ignore the flow of blood. (a) Show that the difference in blood pressure between the feet and the heart is given by P.-PN Pgh (Submit a file with a maximum size of 1 MB.) Choose Fe No e chosen The awer has not been graded yet b) Take the density of blood to be 1.05 x 10 kg/m and the distance between the heart and the feet to be 1.21 m. Find the difference in blood pressure between these two points. This prob in the legs have valves in them that open when blood pumped toward the heart and close when blood flows away from the heart. Also, pumping action produced by physical activities such Need Help?

Answer 1

& Diameter of pipe The Elevation of River is 564 m. Elevation of village is 2102m. prameter of pipe is 14.5 un 20. 145m As Diameter is same throughout the length - Speed of water is same at every point. Apply Bernoulli's Eg" at the river & village; P + 1 fv²+ f g h = P + 1 fv² + f g ha Pi Pressure at village - Density of water v speed of water hi - Elevation of village h2> Elevation of river P2 Pressure at river & P = pi + pg (h, -ha) 101325 Da + 1000x 9.8 (2102-564) = 101325 + 1507 2400 P2 = 15173725 Pa - (InPascal) h = 15.174 MPa - (in Megapascal)

Flow rate = 39ooms 3900 24 ur Бая How Rate = 3900 m² 86400 sec = 0,04513 Xow; As Flow Rate = Area X velocity of liquid 3 0.045138 = TD ² x v 0.0 45130= 3. 14X / 0.0 4 5 130 = 0,016504625 Xv To= 2,73m/s Ane

P = 1513725Pa + 1x 1000 X (2.73) P = 1513725 + 3726,45 P = 1517451, 45 Pat P = 1517.451 kPa]