Question

water is Towing in the pipe shown in the figure below, with the 7.95-cm diameter at point 1 tapering to 3.15 cm at point 2, located y = 13.5 cm below point 1. The water pressure at point 1 ls 3.20 x 109 Pa and decreases by 50% at point 2. Assume steady, ideal flow. What is the speed of the water at the following points? (a) point 1 Your response differs significantly from the correct answer. Rework your solution from the beginning and check each step carefully, m/s (b) point 2 Your response differs from the correct answer by more than 100% m/s Need Help? Read It Submit Answer Practice Another Version

Answer 1

but all colues Diameter at ildid=7.95cm Diameter at 2 (22) = 3.15cm suppose speed at 1 = suppose speed at a = ₂ wsing equation of continuity A1 6,= A2 U2 by 07260, 34 (6.376)2 67 = 2x1.6X10" +9.880.135 (000 39.5769 0,2 = 33-323 33.323 39-57 = 0.9175 mis 4 = 6.370, so speed at o Pressure at 0 = 3.2x104 Pa 4, = 0.9175m is Pregure at ③ = 1.68104 Pa. speed at ③ height at 0 =y=13.5cm = 6.37 ce, hay = 0.135m height at ② =h2=0 (₂ = 5.845mls] using Bernoull; Theorem between 0 and P, + 1 Bu? + Pg h = P2 + vrt 2ghz I 3(U2_62) = P, P2 + 8gh, 2-0,2 = 2(P - P22+ ghi P