The cross-sectional area of a wide-flange I-beam has the dimensions shown. Obtain a close approximation to the handbook value of I = 654 in.4 by treating the section as being composed of three rectangles. 16.25" 0,380" 7.073" 0.628" Answer: I, in.4

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4. For the A-B alloy the phase diagram below, use the lever rule to find the amount of liquid and solid states and their compositions at Temperature T. Let Cx = 25%B, C =40%B, Cy = 60 %B Complete solubility of two metals in liquid and solid states (Ni -Cu ,Sb - Bi) TA M EM T EMa T Cy A B Concentration of B in A www.substoch com Temperature

b) Figure 1 shows a phase diagram for Cu-Ni binary system. Make a phase analysis of this system at point Q. T.°C 1450 1250 1050 0 20 40 60 80 100