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1. A Pb-Sn alloy contains 23% primary a and 77% eutectic microconstituent. Determine the composition of the alloy.
2. An Al-Si alloy contains 15% primary β and 85% eutectic microconstituent. Determine the composition of the alloy.
A baseball is thrown by a pitcher at 95 mph through standard air. The diameter of the baseball is 2.82in. Estimate the drag force on the baseball. State any assumptions.
A solid cylinder with a radius of 5.0 cm and a length of 10 cm is cut in half lengthwise. What is the surface area of one of the two resulting objects?
Determines if the member forces are in tension or compression (note that a negative number denotes compression and a position number denotes tension)
Water exits a 1-cm-diameter outlet of a faucet. Estimate the maximum speed that would result in a laminar ?ow if the water temperature is (a) 20-C, (b) 50-C, and (c) 100-C. Assume Re ¼ 2000.
a patent application describes a device that at steady state receives a heat transfer at the rate 1 kw at a
The heat capacitance of various gases
a 2 m3 tank containing nitrogen at 25oc and 500kpa is connected through a valve to another tank containing 3kg of
Find the unbalanced forces and moments in the engine.
a shaft is loaded by a torque of 5 kn-m. the material has a yield point of 350 mpa. find the required diameter usinga
Find the new angular speed of the student. Calculate the kinetic energy of the system before the student pulls his arms inwards.
A rigid insulated tank contains 0.6 kg of air, initially at 200 kPa, 20 C. The air is stirred by a paddle wheel until its pressure is 250 kPa. Using the ideal gas model with Cv = 0.72 kJ/(kg*K), determine, in kJ, (a) the work, (b) the change in exerg..
Medicine. One leukemic cell injected into a healthy mouse will divide into 2 cells in about day. At the end of the day these 2 cells will divide into 4. This doubling continues until 1 billion cells are formed; then the animal dies with leukemic c..
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