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C3 [20 marksl a) If an iron rod 1.5 m long at 20°C and expands by 1.416 mm when heated to 100°C. Find the coefficient of linear expansion for iron. b) A large wooden barrel needs an iron band to be placed around the rim of its base. The iron band is made slightly smaller than the diameter of the barrels base so that it may be heated placed over the barrel and shrunk tightly into place. If the bands diameter is 105.93 cm at 25°C and the barrels base diameter is 106.43 cm, to what minimum temperature must the band be heated so it can be placed over the base? (aliron-1.18 x 10oC-) c) A mass of gas has volume 3.1360 m2 when the temperature is 100°C and pressure in 22 kPa (gauge). Determine the volume of mass of gas at normal atmospheric conditions (20°C and 101 kPa)

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