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A Cu-30% Zn alloy tensile bar has a strain hardening coefficient of 0.50. The bar, which has an initial diameter of 1 cm and an initial gage length of 3 cm, fails at an engineering stress of 120 MPa. After fracture, the gage length is 3.5 cm and the diameter is 0.926 cm. No necking occurred. Calculate the true stress when the true strain is 0.05 cm/cm.
under what circumstances is there an exception to the general law that an identified original section corner controls the positions of the boundary lines meeting at or passing through the corner
Temperature is 20°C. A constriction in the pipeline causes velocity to increase to 13 m/s within the constriction. Assuming that Bernoulli's equation applies (i.e. p + ½ ? v2 = constant), is there a chance that cavitation will occur
A rigid tank contains 1 kmol of Ar gas at 220 K and 5 MPa. A valve is now opened, and 3 kmol of N2 gas is allowed to enter the tank at 190 K and 8 MPa. The final mixture temperature is 200 K. Determine the pressure of the mixture, using (a) the id..
A 6ft wide, 10ft high vertical rectangular gate has its top edge 6ft below the water level. it is hinged along its lower edge. what force, acting on the top edge, is necessary to hold the gate shut
Determine the acceleration of the initially stationary 20-kg body when the 50-N force P is applied. The small wheels at B are ideal, and the feet at A are small.
If fy = 60,000 psi and fc' = 5000 psi, what is the nominal flexural strength, and what is the maximum moment that can be utilized in design, according to ACI Code
Freehand sketches used to determine room locations, flow of traffic, and spatial relationships
A grit chamber is designed for a flow-through velocity of 0.30 m/s, a depth of 0.9 m, and a length of 10.5 m. If inorganic particles have a specific gravity of 2.65,
Definition and purpose of swimming pools, Different Types of swimming pools, Process of building the swimming pools, Forces acting on swimming pools, Design criteria of swimming pools.
Flue gas containing NO2is then treated by an air pollution control equipment with 85% efficiency. Determine the annual emission rate of NO2 leaving the air pollution control device.
Five million gallons per day (mgd) of a conservative substance,with concentration of 10 mg/L is released into a stream having anupstream flow of 10.0 mgd and a substance concentration of 3 mg/L.Assume complete mixing.
An investor has invested $250,000 in a new rental property. Her estimated annual costas are $6,000 and annual revenues are $20,000. What rate of return per year will the investor make over a 30-year period ignoring the salvage value
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