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Whisker filaments of SiC that are 5 μm thick are coated withan aluminum alloy using a chemical bonding process. The coating process is carried out at 650 oC before the sample iscooled to room temperature. Elastic stresses due to thermal expansion mismatch do not begin to appreciably accumulate until the alloy has cooled to approximately 200 oC due to alloyviscosity. If the stresses necessary to maintain whisker/coating compatibility are assumed to be normal stresses acting only in thedirection of the filament axis, what is their sign and magnitude at20 oC? Relevant materials properties are:ESiC = 476 GPA, EAl = 70 GPA,αSiC = 4.7 x 10-6/oC,αAl = 21 x 10-6/oC.
A discharge from a power plant cooling tower has a temperature of 81 degrees C and flows into the stream at a rate of 3 cubic meters per minute. What is the temperature in the stream downstream of the cooling tower discharge
Based on volume of a sphere V=4/3(pi)r^3, create a table of volume vs. radius allowing radius to vary from 2.0 to 10.0 cm in 1 cm increments. Graph the data from the table on log-log paper using radius as the independent variable.
A 4 mgd water treatment planet is being designed for an overflow rate of 0.5 gpm/ft^2. If two circular sedimentation basins will be used at al times, what should be the diameter of each basin
Water in a pip has a pressure of 22.1 lb/ft2. What is the pressure head?
A 200 foot long, 2.5 feet in diameter, straight, corrugated metal storm drain pipe, is used to drain a parking lot. The elevation difference between the pipe ends is 8 feet. What velocity would be expected
If the resultant force of the two tugboats is 2.2kN , directed along the positive x axis, determine the required magnitude of force Fb. Determine the direction theta of force Fb
design a horizontal curve for a two-lane road. The road has 12-ft. lanes. Due to expansive excavation, it is determined that a maximum of 34 ft. can be cleared from the road's centerline toward the inside lane to provide for stopping sight distanc..
A sample of natural glacial till was taken from below the groundwater table. The water content was found to be 52%. Estimate the wet density, dry density, buoyant density, porosity, and void ratio.
compute the finals velocities v1' and v2' after collision of the two cylinders which slide on the smooth horizontals shaft. The cofficient of restitution is e= 0.6. m1 = 2 kg, v1= 7m/s and m2 = 3 kg , v2 = 5 m/s
A separatist Droid Army bettlestation is damaged during an intense battle over Coruscant, and it begins to fall towards to planet with an acceleration of s' = -gR^2/s^2 where s is the bettlestation's distance from Coruscant's center
a 110 cubic centimeter volume of clay weighs 145 g in its undisturbed state. when the clay specimen is dried it weighs 110.5g. what is the natural water content of the clay, and what is the degree of saturation Assume Gs=2.70
A company manufactures a brand of light bulbs with a lifetime in month that is normally distribute with a mean=3 and a variance=1. A consumer buys a number of these bulbs with the intention of replacing them successively as they burn out.
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