The C83400-red-brass rod AB and 2014-T6-aluminum rod BC are joined at the collar B and fixed connected at their ends. The cross-sectional area of each member is 1130mm2. There is no load in the members when T1=10C. (Figure 1) Determine the magnitude of the average normal stress in member AB when T2=39C Express your answer to three significant figures and include the appropriate units. X Incorrect; Try Again Part B Determine the magnitude of the average normal stress in member BC when T2=39C. Express your answer to three significant figures and include the appropriate units. Figure