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Diffusion Coeffiecient, Calculate Constant
The diffusion coeffiecient for Cr^+3 in Cr2O3 is 6x10^-15 cm2/s at 727 degrees Celcius and is 1x10^-9 cm2/s at 1400 degrees Celcius. Calculate the constant D0. Use the value of the Gas constant R+1.987 cal/mole.K
a) 0.015 cm2/s
b) 0.055 cm2/s
c) 0.25 cm2/s
To determine the heat transfer characteristics of a cylinder under cross flow conditions when the cylinder is isolated.
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Construct the homogeneous solution in terms of four constant that could be determined from initial conditions and show the equations of motion
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Two flat, rectangular plates with a lateral dimension w*l lie parallel, one above the other, a distance h apart. The gap between them is filled with molten polymer.
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The 50-lb load is hoisted by the pulley system and motor M. If the crate starts from rest and by constant acceleration attains a speed of 15 ft/s after rising s = 6 ft, determine the power that must be supplied to the motor at this instant.
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