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1. Briefly state the Hume-Rothery rules and explain the rationale
2. Based on Hume-Rothery's conditions, which of the following systems would be expected to display unlimited solid solubility? Explain.
(a) AuAg;
(b) Al-Cu;
(c) Al-Au;
(d) U-W;
(e) Mo-Ta;
(f) Nb-W;
(g) Mg-Zn; and
(h) Mg-Cd.
Determine the critical load for the column, considering Euler buckling in the plane of the web and also perpendicular to the plane of the web.
a ceramic has k0.8 wmk. if this ceramic is shaped into a cylinder with a porosity distribution given by p.1xl1-xl where
A disc with radius, R, rotates (at an angular speed of [omega]) near a surface that is fixed. The space between the disc and surface is filled with a fluid that has viscosity, µ. The distance between the disc and surface is h. Find the dependence bet..
air at t11300 0r p116 lbfin2 enters a counterflow heat exchanger operating at steady state and exits at p214.7 lbfin2.
Two blocks A and B, of mass 5 kg and 6kg respectively, are connected by a cord which passes over pulleys as shown. A collar C, of mass 4kg, is placed on block and the system is released from rest. After the blocks have moved through 0.9m, collar C..
Using the tables for water, determine the specified property data at the indicated states. In each case, locate the state on sketches of the p-v and T-v diagrams.
Calculate the specific weight of toluene at a place where the acceleration of gravity is 32.2 ft/s^2or 9.81 m/s^2. Express your answer in both lbf/ft^3 and kg/m^3. Repeat this for Mars whre the acceleration due to gravity is 37.5% of that on Earth.
the end of a robtoic arm extends along the path of the limacon r 1.5 cos thetam. at the instant that theta pi4 the
a hollow 6 ft. diameter sphere floats half-submerged in seawater. what mass of concrete is required as an external
An ideal gas turbine cycle with many stages of compression and expansion and a regenerator of 100 percent effectiveness has an overall pressure ratio of 10. Air enters every stage of compressor at 290 K, and every stage of turbine at 1200 K. The t..
A water cooled compressor with air flowing at 0.1 kg/s enters at a temperature of 27*C. The compressor work is 5 kW and the heat transfer rate to the water is 2 kW. Use air as an ideal gas (Cp = 1.006 kJ/kg-K). Ignore changes in KE and PE.
A tensile bar of a class 40 gray iron casting is found to have a tensile strength of 50,000 psi. Why is the tensile strength greater than that given by the class number? What do you think is the diameter of the test bar?
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