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Oil is flowing in a pipeline at a rate of 20 ft3/sec. The friction drop in the pipeline is 50 ft per mile. Each pumping station is to be equipped with a 500 hp pump with an efficiency of 80%. At what intervals should the pumping stations be located? Assume the density of the oil is the same as water at 68°F.
a weight attached to a spring of stiffness 525nm has a viscous damping device. when the weight is displaced and
consider the annulus formed between a rod of radius r0 and a tube of radius r1. find the velocity profile for couette
An ideal vapor-compression refrigeration system operates at steady state with Refrigerant 134a as the working fluid. Superheated vapor enters the compressor at 30 lbf/in2, 20F, and saturated liquid leaves the condenser at 140 lbf/in2. The refriger..
the pressure drop between the entrance and exit of a 150 mm diameter 90deg elbow through which ethyl alcohol at 20degc
Consider just the vertical (y) response of the system when the beam is being stretched. Show that the spring constant, ka, is approximately 70.6 mN/m. What is the steady state amplitude of the vertical response? See Figure A below for an engine..
Treat the locomotive as a particle and assume that the railroad tracks are rectilinear and horizontal.
in a system a lever needs and effort of 200n to lift a load of 350n. the end of the lever arm moves 50cm and the load
consider two concentric thin wall steel tubes the larger one closed at the bottom and the inner one open. the tubes are
nutrients dissolved in water are carried to upper parts of plants by tiny tubes partly because of the capillary
a commercially available sump pump is capable of deliver-ing 2800 gallons per hour of water through a vertical lift of
a scuba diver has a tank with an internal volume of 2500 cm3 air tank which is pressurized to 22 mpa at 27 deg c. after
a pneumatic lift system is being demonstrated at a sales show. the total load is 70 kg and the lift piston is 15.2 cm
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