A 12-in. length of aluminum tubing (with properties of E = 10.4 times 106 psi and alpha = 12 times 10 -6 per degree Fahrenheit) having a cross-sectional area of 15 in. 2 is installed with "fixed" ends so that it is stress-free at 60 degree F. In operation, the tube is heated throughout to a uniform 260:F. Careful measurements indicate that the fixed ends separate by .008 in. What loads are exerted on the ends of the tube, and what are the resultant stresses?