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Unformatted text preview: 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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This note was uploaded on 11/10/2011 for the course PHYSICS 303L taught by Professor Hoffman during the Fall '11 term at University of Texas.
- Fall '11