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Find the normal depth of flow in a straight and uniform triangular road ditch that has been excavated recently and is free of weeds. The side slopes are 3:1 and the longitunidal ditch slope is 0.001. The design discharge is 1.5 ft^3/s. If the persmissible shear stress to avoid erosion is 0.05 lb/ft^3, is the channel stable?
A 4-cm- diameter rod of aluminum 7075-T6 is to subjected to an axial tensile force such that the factor of safety based on the yield stress on 1.75. Find the maximum allowable tensile force. The yield stress of the aluminum 7075-T6 is o-y= 500MPa.
An activated sludge tank, 30 x 30 x 200 ft, is designed as a plug-flow reactor, with an influent BOD of 200 mg/L and a flow rate of 1 million gallons per day. a. If BOD removal is first-order reaction, and the rate constant is 2.5 days^-1, what is ..
a piston-and-cylinder device contains 5 kg of water initially at 150 C and 0.20 MPa. The frictionless piston is then pushed slowly in an isothermal process until the volume of water becomes 10% of its initial value.
Derive an expression for an equivalent bending moment Me that, if applied alone to a solid bar with a circular cross section, would cause the same energy of distortion as the combination of an applied bending moment M and torque T .
A square footing 2 meters by 2 meters is to be constructed 1.22 meters below the ground surface. The groundwater table is located 1.82 meters below the ground surface. The subsoil consists of a uniform, medium dense, cohesionless soil with the follow..
Derive the vector equation for the acceleration of a particle in normal and tangental compontens. Begin with the velocity vector v=vut where v=ds/dt show all work including any convesion unit vectors.
a particle moving along a straight path decelerates according to a = -kv. this represent a drag-induced deceleration. assume that the intial velocity is vo at t=0 and s = 0. determine the velocity of the particle both
two immiscible fluids are in contact. fluid i is denser and is also well mixed. the concentration of species a is cao
Design a helical compression spring using stainless steel wire. ASTM A313. Type 316, for average service, which will exert a force of 8.00 lb after deflecting 1.75 in from a free length of 2.75 in
A chemical mixing basin is to be designed to blend chlorine and treated wastewater. The basin flow is 700 gallons per minute and the basin dimensions are 5 feet by 5 feet by 5 feet water depth
Draw the arrangement of atoms in this plane and determine the stacking arrangement normal to this plane in the BCC structure. Is the stacking the same as in the HCP structure?
How to solve compound stress problems? any one can give me brief explanation?
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