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Some alloys use a combination of strain hardening and precipitation hardening to achieve particularly high strength levels. The usual order of strengthening is solution treatment,quenching, cold working, and finally precipitation heat treatment. Why not reverse the order ofthe cold working and precipitation heat treatment steps
mr. john is considering two machines to purchase for his company. machine x will have a first cost of 80000 an
In the TWA Flight 800 tragedy the accident is blamed on explosion of fuel vapors in the central fuel tank. The volume of the central fuel tank is 18,000 gal. For jet fuel the energy of explosion is 18,590 Btu/lb and the molecular weight is 160.
steam enters an adiabatic turbine at 8 mpa and 520 degc with a volumetric flow rate of 0.8 m3s and exits at 30 kpa. the
Find the temperature of water at 200 kPa and specific enthalpy of 350 kJ/kg. A heat pump and a refrigerator operate on same cycle between same hot and cool reservoir at temperature TH, and TL, respectively. Please demonstrate = +1 COPHP COPRF and com..
H2O at 350oF, 60 psi enters an insulated nozzle at 10 ft/s. It leaves at 1440 ft/s and 35 psi. What is the isentropic efficiency?
Calculate the change in velocity required in changing the position of a satellite in an orbit by 90 degrees. The initial and final orbit is circular around the Earth with a 15000 km radius. Calculate the delta velocity, semi-major axis and period for..
air enters a compressor at ambient conditions of 100kpa and 17 degc with a low velocity and exits at 1mpa 327 degc and
beginning in the 1900s water troughs called track pans were built between the rails to allow steam locomotives to scoop
type your question herea 5000 lb truck is being used to lift a 1000 lb boulder b that is on a 200lb pallet a. knowing
a rectangular boat the horizontal sides are l each the depth is h l2 is made of a think weightless walls and partially
steam is the working fluid in an ideal reheat rankine cycle. steam enters the first-stage turbine at 8.0 mpa 480oc and
Mainframe computing used to be the only way to manage enterprise data. Then personal computers changed the data management scene. How do these two computing styles differ, and how did shift to PC-based computing evolve.
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