Thermal conductivity k (9%) Problem 10: Suppose a house's walls are 13 cm thick and and have an average thermal conductivity twice that of glass wool. Substance (J/s•m C) Glass wool Wool 0.042 0.04 Glass 0.84 Human body Ceramic Wood Air Fatty tissue 0.2 0.84 0.08-0.16 0.023 0.2 Styrofoam 0.010 ©theexpertta.com 50% Part (a) Calculate the rate of heat conduction, in watts, through the house's walls. Assume there are no windows or doors. The surface area of the walls is 140 m² and their inside surface is at 18.5°C, while their outside surface is at 5.15°C. Grade Summary Q'At = Deductions 0% 100% Potential sin() cos() tan() 9 HOME Submissions Attempts remaining: 10 (0% per attempt) detailed view cotan() asin() acos() E 4 5 atan() acotan() sinh() cosh() tanh() cotanh() END ODegrees O Radians VO BACKSPACE DEL CLEAR Submit Hint Feedback I give up! Hints: 0% deduction per hint. Hints remaining:1 Feedback: 0% deduction per feedback. 50% Part (b) How many 1.00-kW room heaters would be needed to balance the heat transfer due to conduction? Round your answer to the nearest integer value. 63 2. 1.

Thermal conductivity k (9%) Problem 10: Suppose a house's walls are 13 cm thick and and have an average thermal conductivity twice that of glass wool. Substance (J/s•m C) Glass wool Wool 0.042 0.04 Glass 0.84 Human body Ceramic Wood Air Fatty tissue 0.2 0.84 0.08-0.16 0.023 0.2 Styrofoam 0.010 ©theexpertta.com 50% Part (a) Calculate the rate of heat conduction, in watts, through the house's walls. Assume there are no windows or doors. The surface area of the walls is 140 m² and their inside surface is at 18.5°C, while their outside surface is at 5.15°C. Grade Summary Q'At = Deductions 0% 100% Potential sin() cos() tan() 9 HOME Submissions Attempts remaining: 10 (0% per attempt) detailed view cotan() asin() acos() E 4 5 atan() acotan() sinh() cosh() tanh() cotanh() END ODegrees O Radians VO BACKSPACE DEL CLEAR Submit Hint Feedback I give up! Hints: 0% deduction per hint. Hints remaining:1 Feedback: 0% deduction per feedback. 50% Part (b) How many 1.00-kW room heaters would be needed to balance the heat transfer due to conduction? Round your answer to the nearest integer value. 63 2. 1.

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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