efficient of expansion of copper per degree C = 0.000 017.7.An iron tyre of diameter 50 cm at 15 deg C is to be shrunk on to a wheel of diameter 50.35 cm. To what temperature mist the tyre be heated so that if will slip over the wheel with a radial gap of 0.5 mm.(Coefficient of linear expansion of iron = 0.000 012/deg C)8.A metal rod has a length of 100 cm at 200 deg C. At what temperature will its length be 99.4 cm if the coefficient of linear expansion of the material of the rod is 0.000 02/deg C.9.A square metal plate, each side 100 cm long at 0 deg C, has a circular hole of diameter 40 cm in the middle of it. At what temperature will the sides be 101 cm long, and what will then be the diameter of the hole? (Coefficient of linear expansion of the metal = 0.000 012 5/deg C.)10.A compound strip of brass and iron 10 cm long at 20 deg is held horizontally with the iron upper most. When heated from below with a Bunsen, the temperature of the brass is 820 deg C and of the iron 770 deg C. Calculate the difference in lengths of the iron and the brass. (Coefficient of linear expansion of brass = 0.000 019/deg C; of iron = 0.000 012/deg C.)...
