Part A At what rate is heat being lost through the window by conduction? Express your answer in watts to three significant figures. ? H = W Request Answer Submit Part B At what rate would heat be lost through the window if you covered it with a 0.750-mm-thick layer of paper (thermal conductivity 0.0500 W/m- K)? Express your answer in watts to three significant figures. ? H2 = %3! Submit queet Anewer

Physics for Scientists and Engineers: Foundations and Connections
1st Edition
ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Katz, Debora M.
Chapter21: Heat And The First Law Of Thermodynamics
Section: Chapter Questions
Problem 71PQ
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A picture window has dimensions of 1.40 m × 2.50 m and is made of glass 6.10 mm thick. On a winter day, the outside temperature is -16.0° C, while the inside temperature is a comfortable 19.56°C. The thermal
conductivity of glass is 0.8 W/(m · K).
Part A
At what rate is heat being lost through the window by conduction?
Express your answer in watts to three significant figures.
Π ΑΣφ
H1 =
W
Submit
Request Answer
Part B
At what rate would heat be lost through the window if you covered it with a 0.750-mm-thick layer of paper (thermal conductivity 0.0500 W/m · K)?
Express your answer in watts to three significant figures.
ΑΣφ
?
H2
W
%D
Submit
Request Answer
Transcribed Image Text:A picture window has dimensions of 1.40 m × 2.50 m and is made of glass 6.10 mm thick. On a winter day, the outside temperature is -16.0° C, while the inside temperature is a comfortable 19.56°C. The thermal conductivity of glass is 0.8 W/(m · K). Part A At what rate is heat being lost through the window by conduction? Express your answer in watts to three significant figures. Π ΑΣφ H1 = W Submit Request Answer Part B At what rate would heat be lost through the window if you covered it with a 0.750-mm-thick layer of paper (thermal conductivity 0.0500 W/m · K)? Express your answer in watts to three significant figures. ΑΣφ ? H2 W %D Submit Request Answer
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