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(a) Derive the expression for corrosion rate in MPY given in Equation (6). **Equation(6): MPY = 534W/DAT W: weight loss in milligrams ; D: density

(a) Derive the expression for corrosion rate in MPY given in Equation (6). **Equation(6): MPY = 534W/DAT W: weight loss in milligrams ; D: density in grams per cubic centimeter; A : area in square inches ; T : time in hours. Tips: Equation(6) can be derived readily by dimensional analysis. (b) Show how the constant 543 in this equation changes to 87600 when units of corrosion rate change to micrometers per year with area measured in cm^2.

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