IP It is desired to slip an aluminum ring over a steel bar (see the figure(Figure 1)). At 20 C the inside diameter of the ring is 7.000 cm and the diameter of the rod is 7.040 cm. Figure Steel 1 of 1 > Aluminum Part A In order for the ring to slip over the bar, should the ring be heated or cooled? heated cooled Submit Correct Part B. T= Previous Answers Find the temperature of the ring at which it fits over the bar. The bar remains at 20 C. Express your answer using two significant figures. IVE Submit Request Answer ? C