45. What is the relative fluid pressure P, in the unsaturated zone of a soil? a. P= atmospheric pressure b. P< atmospheric pressure c. P> atmospheric pressure d. P= 0
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- Determine the hydraulic permeability (of pure water) in (kg/m2 Pa s) from the following data measured on a 5 cm diameter membrane. ΔΡ (bar) Flux (ml/h) 5 103 10 202 15 287 20 386 25 501Richard Equation studies the relation between? A- Hydraulic conductivity and time. B- Discharge, hydraulic conductivity and time. C- matrix potential head and hydraulic conductivity. D- matrix potential head and time. What is the correct answer above???1. Briefly discuss the significance of determining falling head permeability (hydraulic conductivity). 2. Briefly discuss the relationship of Darcy’s law and constant head test.
- The rectangular channel is 2 m wide, and the depth of the water is y₁ = 1.6 m as it flows with an average velocity of V = 0.6 m/s. (Figure 1) Figure < 1 of 1 Part C Determine the required height of the bump so that the flow can change to rapid flow after it passes over the bump. Express your answer to three significant figures and include the appropriate units. h= Submit Part D ■μÀ 1 Value Y2 = Request Answer What is the new depth y2 for rapid flow? Express your answer to three significant figures and include the appropriate units. " Submit μA Value Units Request Answer O ? Units ReviDefine, compare and contrast terms saturated and unsaturated hydraulic conductivity and explain theirimportance in understanding movement of water in the ground.Determine the elevation difference, Ah, between the water levels in the two open tanks shown in the figure below. Assume SG = 0.81. Ah= E 1m SG. Water 0.4 m ↑ V Ah
- The following figure shows the water levels in piezometers and pitot tubes installed at points A and B in the pipe. The water is flowing at a steady-state condition. 0.75 m 0.75 m 2.9 m 1.5 m L=150 m 3.9 m 1.9 m Determine the following; • Elevation, pressure and velocity head at points A and B • Head loss between point A and B Hydraulic gradient between point A and B • Direction of flowWith the pressure meter located at Point B, the pressure of running water at point A is measured. Temperature 20°C and specific gravity of fluids According to N/ m3; Ywater=9790 N/m?. \mercury =133100 N/m³. Yoil = 8720 a) show The Co-print lines on the figure. b)if the pressure value in B is 87 kPa, calculate the pressure value at Point A. SAE 30 oil Gage B 6 ст mercury A 5 cmi Water 11 ст 4 cmDirection: Choose A- When both statements are true; B - When both statements are false; C- When the first statement is true and the second statement is false; D- When the first statement is false and the second statement is true. First Statement: The piezometric surface of an aquifer confined by an aquiclude is higher than that of an unconfined. Second Statement: Hydraulic conductivity is a measure of permeability or impermeability of a geologic unit. OA B. D.
- Determine the elevation difference, Ah, between the water levels in the two open tanks shown in the figure below. Assume SG = 0.92. Δη= m 1m SG. Water 0.4 m ↑ Ah1.) If the weight density of mud is given by γ = 65.0 + 0.2h, where γ is in lb/ft3 and depth h is in ft, determine the pressure, in psi, at a depth of 17 ft. 2.) If the atmospheric pressure is 0.90 bar abs and a gage attached to a tank reads 390 mmHg vacuum, what is the absolute pressure within the tank? 3.) The system in the figure below is at 20 °C. If the pressure at point A is 2900 lb/ft2, determine the pressures at points B, C, and D.Determine the elevation difference, Ah, between the water levels in the two open tanks shown in the figure below. Assume SG = 0.89. 1m Ah = SG. Water 0.4 m ↑ V 3 Ah