Problem 5 - Heat and Thermodynamics A household refrigerator, rating COP=4.2 and power 195 W, absorbs heat from the freezer compartment at a temperature -13 °C and exhausts it into the room at 11 °C temperature. (a) 1.0 kg amount of water at room temperature is placed inside the freezer compartment. How much time it will take to freeze that water into ice at the freezer temperature? (b) Calculate the change in entropy of that amount of water as it undergoes from being at room temperature to become ice at freezer temperature. (Hint: In(1+x) = x when Ixl<1) (c) Calculate the change in entropy of the room's environment. Comment on the total change in entropy of the system with room and the refrigerator together.

Problem 5 - Heat and Thermodynamics A household refrigerator, rating COP=4.2 and power 195 W, absorbs heat from the freezer compartment at a temperature -13 °C and exhausts it into the room at 11 °C temperature. (a) 1.0 kg amount of water at room temperature is placed inside the freezer compartment. How much time it will take to freeze that water into ice at the freezer temperature? (b) Calculate the change in entropy of that amount of water as it undergoes from being at room temperature to become ice at freezer temperature. (Hint: In(1+x) = x when Ixl<1) (c) Calculate the change in entropy of the room's environment. Comment on the total change in entropy of the system with room and the refrigerator together.

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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