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The Weeknd Starboy Xo Hocc × ' N Netflix y WileyPLUS Ahmad > c Secure l https://edugen.wileyplus.com/edugen/student/mainfr.uni Bing w Wikipedia R Facebook y Twitter-LinkedIn D The weather Channel Yelp »Other Bookmarks I Help I Contact Us I Leg Out ps WileyPLUS Differential calculus. LA University of South D Apple iCloud Yahoo WileyPLUS Halliday, Fundamentals of Physics, 10e Calculus-based Physics I ⅈ (PH 201-202) Home Read, Study & Practice Gradebook ORION Downloadable eTextbook Assianment> Open Assignment FULL SCREEN PRINTER VERSION BACK ASSIGNMENT RESOURCES Chapter 18, Problem 052 201-24 003 The ceiling of a single-family dwelling in a cold climate should have an R-value of 36 ft, Fo,h/Btu. To give such insulation, how thick would a layer of (a) polyurethane foam and (b) silver have to be? The thermal conductivity of polyurethane foam is 0.024 W/m-K, and the thermal conductivity of silver is 428 W/m-K. (a) Number (b) Number 026 Units 032 Units 042 LINK TO TEXT Review Score Review Results by Study Question Attempts: 0 of 6 used SAVE FOR LATER SUBMIT ANSWER Version 4.24.2.4 https:/ledugen wlcyplus.com/edugenfshared/assignment/test/ag istuni?id-asnmt211258

Explanation / Answer

a) 36 ft2 Fh/Btu = 36 * 0.176110 km2/W = 6.339 km2/W

L = R * K

= 6.339 * 0.024 = 0.152 m

b)for siver, L = R * K

= 6.339 * 428 = 2713 m

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