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Then a uniform stream flows past an immersed thick cylinder, a broad low-velocity wake is created down- stream, idealized as a V shape in Fig. P3.44. Pressures p1 and p2 are approximately equal. If the flow is twodimensional and incompressible, with width b into the paper, derive a formula for the drag force F on the cylinder. Rewrite your result in the form of a dimensionless drag
A high-speed elevator is being designed that must be able to travel at a maximum speed of 11.5 fts. You are asked to recommend the lift motor to use. The completely furnished carriage will have a mass of 3500 pounds. The design occupancy limit will b..
A 2-dimensional potential flow is produced by three identical sources, each of strength Q. The sources are located at (x,y) = (-1,0), (0,1), and (0,-1).
a brinell hardness measurement is made on a nickel alloy using a 0.01 m diameter sphere of tungsten carbide. a load of
a horizontal cylinder is separated into two sections by an adiabatic frictionless piston. one section contains 0.2 m3
We are learning about oscillations and second-order dynamic systems. We observe a crane at a construction site on campus and notice that as soon as the crane operator releases the load, the whole crane oscillates back and forth several times as the v..
a supertanker is 360 m long and has a beam width of 70 m and a draft of 25 m. estimate the force and power required to
A living plant leaf is an open system that exchanges energy (sunlight and thermal flows) + matter (O2, CO2, water vapor, etc.) with the surroundings (the exterior). Even with irreversible processes (energy dissipation) we find that the net entropy ch..
refrigerant r-134a enters a 1 cm constant diameter tube at 400 kpa and 30 degree c. the refrigerant leaves the tube at
Calculate the temperature of the water exiting the absorber tubes. Calculate the rate of exergy transfer accompanying the heat transferred from the absorber tubes to the water. Calculate the amount of exergy destroyed in the absorber tubes.
4-in square steel bar subjected to transverse biaxial tensile stressesconsider a 4-in square steel bar subjected to
An important application of micro fluidics is in the area of electro kinetic separations, in which an electric field is applied along the length of a micro channel to generate differential velocities for various components (molecules, nanoparticles, ..
The w 310 * 129 structural A -36 steel column has a length of 4 m. If it's bottom end is fixed supported while it's top is free determine the largest axial load it can support use a factor f safety with respect to buckling of 1.75. E = 210 GPa , QY =..
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