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Q. A 51.7-g golf ball is driven from the tee with an initial speed of 43.7 m/s and rises to a height of 31.9 m. (a) Neglect air resistance and determine the kinetic energy of the ball at its highest point. (b) What is its speed when it is 7.97 m below its highest point?

Q. A hollow copper cylinder is to be fitted over a steel piston. At 10°C the inside diameter of the cylinder is 99% of the outside diameter of the piston. To what common temperature should the two pieces be heated in order that the cylinder just fit over the piston?

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