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1. Explain why aluminum alloys containing more than about 15% Mg are not used.
2. Would you expect a 2024-T9 aluminum alloy to be stronger or weaker than a 2024-T6 alloy? Explain.
3. Estimate the tensile strength expected for the following aluminum alloys:
the advance ratio j for a propeller is defined as jvnd where v is the velocity n is the propellers revolutions per
its about how to measure an increase in wind velocity through a restriction.it starts with an area that is 17 wide by
A 3 mm thick aluminum sheet is cut with a 4 cm diameter round punch. If the punch exerts a force of 6 kN, what is the shear stress in the sheet? Report the answer in MPa.
A 5v belt drive system operates an input speed of 1250 RPM at the small sheave. The driving sheave has a pitch diameter of 6.000 in, and the driven sheave has a pitch diameter of 19.000 in. If an optimum center distance of 47 in is specified.
the pump-turbine system draws water from the upper reservoir in the daytime to produce power for a city. at night it
a carnot refrigerator is used for making ice. water freezing at 32 f is the cold reservoir. heat is rejected to a river
air is enclosed by a rigid cylinder containing a piston. a pressure gage attached to the cylinder indicates an initial
determine the rate of heat loss from the pipes
consider a fluid of density ? inincompressible laminar flow in a plane narrow slit of lengthl and width w formed by two
in cooling situations where the desired temperature range is large two refrigeration cycles can be stacked to create a
An aquifer has a hydraulic conductivity of 12 ft/day and an effective porosity of 17% and is under a hydraulic gradient of 0.0055 m/m. Calculate the specific discharge in m/s. Calculate the average linear velocity in m/s.
in a crystallin material slip occurs preferentially along planes having higher planar densities. for a material with an
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