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Crude oil flows through a level section of the Alaskan pipeline at a rate of 1.6 million barrels per day (1 barrel = 42 gallons). The pipe inside diameter is 120 cm, and its roughness has a characteristic dimension of 1.5 mm. The maximum allowable pressure is 8300 kPa, and the minimum pressure required to keep dissolved gases in solution in the crude oil is 350 kPa. The crude oil has SG = 0.93, and its viscosity at the pumping temperature is μ = 0.017 Ns/m2. For these conditions, determine the maximum possible spacing between pumping stations.
A radioactive waste from a clinical laboratory contains 0.2 μCi (microcuries) of calcium-45 (45Ca) per liter. The half-life of 45Ca is 152 days.
If intake1=0m and intake2=0.5m, find the pressure required to fill the container when h=0.75m at both point 1 and 2. Assume the air is at atmospheric pressure until the water level passes intake 2 and the air follows isothermal compression.
Facultative stabilization ponds with a total surface area of 6.0 ha serve a community with a waste discharge of 530 m cubed/d at a BOD of 280 mg/l.
A horizontal water jet impinges against a vertical flat plate at 25 ft/s and splashes off the sides in the vertical plane. If a horizontal force of 350 lbf is required to hold the plate against the water stream,
A tank with a volume of 5,000 gal contains salt solution at an initial concentration (C0*) of 70,000 mg/L, but the concentration in the tank (C) needs to be reduced to 500 mg/L. Two approaches are being considered
Describe in outline the main markets, activities and services provided by the construction and built environment sector.
an operator at a wastewater treatment plant decided to increase the SRT from 5 days to 10 days. How will this change affect: a) the oxygen requirement b) MLVSS in the aeration tank.
Estimate the power expected to be delivered by the model turbine.
A 2.0-ft^3 object weighing 650 lb is attached to a balloon of negligible weight and released in the ocean (γ = 64 lb/ft^3). The balloon was originally inflated with 5.0 lb of air to a pressure of 20 psi.
A direct shear cell 25.4cm x 25.4 cm in plan is filled with dry sand. a normal load of 6kN is applied to the sample, and the shear failure is 3.5kN. What is the anle of internal friction for the sand?
Where: Q is the amount of energy added (joules) M is the mass of the fluid (kg) C (subscript p) is the heat capacity of the fluid (joules/kg/K), and Delta T is the change in temperature (K or C degrees) A garage (24 ft x 24 ft x 10 ft) is illuminated..
A steel plate which is 1.5 m by 1.5 m and 30 mm thick is lifted by four cables attached to its corners that meet at a point that is 2 m above the plate. Determine the required cross sectional area of the cables
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