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1. At 20C, a rod is exactly 20.05 cm long on a steel ruler. Both are placed in an oven at 270C, where the rod new measures 20.11 cm on the same ruler. What is the coefcient of linear expansion for the material of which the rod is made? 1} 2. A sample of gas expands from V: = 1.0 m3 and p1 = 40 Pa to V2 = 4.0 1'113 and p2 = 10 Pa along path B in the p-Vdiagram in the gure. It is then compressed back to V1 along either path A or path C. I); Compute the net work done by the gas for the complete cycle along (a) path BA and (b) path BC. P2 3. A sample of gas expands from an initial pressure and volume of 10 Pa and 1.0 m3 to a nal volume of 2.0 m3. During the expansion, 0 the pressure and volume are related by the equation p = a172, where a = 10 Nims. Determine the work done by the gas during this expansion