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A steel rod that is 40 mm long and has a diameter of 8 mm is composed of an alloy that yields plastically at a uniaxial tensile stress of 450 MPa. One end of the bar has been twisted relative to the other by 1.5°. Determine the amount by which the bar can be elongated, while it is already twisted, without yielding.
A hydraulic cylinder must produce a minimum force of 3 kN for a pressure of 800 kPa. What minimum diameter piston is required
Design a helical compression spring to exert a force of 22.0 lb when compressed to a length of 1.75 in. When its length is 3.00 in, it must exert a force of 5.0 Ib. The spring will be cycled rapidly, with severe service required. Use ASTM A401 ste..
A manhole is 12 ft from the centerline of a 30-ft wide street that has a 6-in. parabolic crown. The street center at the station of the manhole is at elevation 612.58 ft. What is the elevation of the manhole cover?
What is the nature of the stress (compressive or tensile) just below the surface on the Ti-alloy side and on the stainless steel side?
Maximum shear stress both in the tube and sleeve is 16000 psi. Calculate the fluid pressure, and determine the pressure between the sleeve and cylinder when the fluid pressure is absent.
Determine the deflection at the mid span of a simple beam (wood joist) of a row house. The joist is designed as 2x12@16'' for DL = 12psf and LL=40 psf.
A piston-cylinder device contains 0.2kg of water initially at 800 kPa and 0.06m^3. Now 200 kJ of heat is transferred to the water while its pressure is held constant. Determine the final temperature of the water.
A drinking water treatment plant will be designed to process a flow of 15,000 m3/d. The sedimentation tank will have a residence (detention) time of 4 hours and the overflow rate (Q/A) of 16 m 3 /m 2 -day. Estimate the required surface area (A), an..
Q. What is the main objective of NASA's Mars Science Laboratory (MSL) mission? When was it launched and when and where is it scheduled to land on Mars? Explain the major differences between this mission and Mars Exploration Rovers (MER) mission?
A volume of 1.5x106 m3 of water is then pumped out of the aquifer resulting in a decrease of the groundwater level to 208.8 m. Assuming that the water table in the aquifer responds similarly
Carlisle Company has been cited and must invest in equipment to reduce stack emissions or face EPA fines of $18,500 per year. An emission reduction filter will cost $75,000 and have an expected life of 5 years. Carlisles MARR is 10 percent/year.
Calculate the maximum pressure developed when a 10 in. thick wall 10 ft high is to be poured at the rate of 3ft/hr at a temperature of 70 degrees F.
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