# Homework 9 - soto(rrs946 Homework 9 Spurlock(41003 This...

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soto (rrs946) – Homework 9 – Spurlock – (41003) 1 This print-out should have 23 questions. Multiple-choice questions may continue on the next column or page – find all choices before answering. 001 10.0 points A building made with a steel structure is 357 m high on a winter day when the tem- perature is 0 F. How much taller is the building when the temperature is 117 F? The linear expansion coefficient of steel is 1 . 1 × 10 5 ( C) 1 . Answer in units of cm. 002 10.0 points A bridge is made with segments of concrete 102 m long (at the original temperature). If the linear expansion coefficient is 1 . 2 × 10 5 ( C) 1 , how much spacing is needed to allow for expansion for an increase in temperature of 56 F? Answer in units of cm. 003 10.0 points A steel ball bearing is 5 cm in diameter at 18 C. A bronze plate has a hole that is 4 . 996 cm in diameter at 18 C. What common temperature must they have in order for the ball to just squeeze through the hole? Answer in units of C. 004 10.0 points What is the final equilibrium temperature when 25 g of milk at 22 C is added to 197 g of coffee at 75 C? Assume the specific heats of milk and coffee are the same as that of water, and neglect the specific heat of the container. Answer in units of C. 005 10.0 points In an insulated vessel, 242 g of ice at 0 C is added to 660 g of water at 16 C. How much ice remains when the system reaches equilibrium? Assume the heat of fu- sion of ice is 79 . 7 cal / g and its specific heat is 0 . 5 cal / g · C. The heat of vaporization of water is 540 cal / g and its specific heat is 1 cal / g · C.

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