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Q1. A hollow aluminium cylinder is to be fitted over a steel piston. At 22°C the inside diameter of the cylinder is 99.2 percent of the outside diameter of the piston. To what common temperature must the two pieces be heated in order that the cylinder just fit over the piston?

Q2. An ocean liner leaves New York City and travels 20.6 ° north of east for 259 km. How far east and how far north has it gone? In other words, what are the magnitudes of components of the ship's displacement vector in the directions (i) due east and (ii) due north?

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