Bebang owns a 130-mm-thick concrete brick table top that has an area of 10,000,000 mm^2 and a 0.750-cm-thick glass plate that has an area of 20,000 cm^2. Assuming the same temperature difference across each, what is the ratio of the rate of heat conduction through the plate with respect to the rate of heat conduction through the table top? Use Table 10.1(given below) for the value of Thermal Conductivity k.

College Physics
10th Edition
ISBN:9781285737027
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter11: Energy In Thermal Processes
Section: Chapter Questions
Problem 41P: A steam pipe is covered with 1.50-cm-thick insulating material of thermal conductivity 0.200 cal/cm ...
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Bebang owns a 130-mm-thick concrete brick table top that has an area of 10,000,000 mm^2 and a 0.750-cm-thick glass plate that has an area of 20,000 cm^2. Assuming the same temperature difference across each, what is the ratio of the rate of heat conduction through the plate with respect to the rate of heat conduction through the table top? Use Table 10.1(given below) for the value of Thermal Conductivity k.

Table 10.1 Thermal Conductivities of Common Substances
Values are given for temperatures near 0 °C.
Substance
Thermal Conductivity k (W/m- °C)
Diamond
2000
Silver
420
Copper
390
Gold
318
Aluminum
220
Steel iron
80
Steel (stainless)
14
Ice
2.2
Glass (average)
0.84
Concrete brick
0.84
Water
0.6
Fatty tissue (without blood)
0.2
Asbestos
0.16
Plasterboard
0.16
Wood
0.08-0.16
Snow (dry)
0.10
Cork
0.042
Glass wool
0.042
Wool
0.04
Down feathers
0.025
Air
0.023
Polystyrene foam
0.010
Transcribed Image Text:Table 10.1 Thermal Conductivities of Common Substances Values are given for temperatures near 0 °C. Substance Thermal Conductivity k (W/m- °C) Diamond 2000 Silver 420 Copper 390 Gold 318 Aluminum 220 Steel iron 80 Steel (stainless) 14 Ice 2.2 Glass (average) 0.84 Concrete brick 0.84 Water 0.6 Fatty tissue (without blood) 0.2 Asbestos 0.16 Plasterboard 0.16 Wood 0.08-0.16 Snow (dry) 0.10 Cork 0.042 Glass wool 0.042 Wool 0.04 Down feathers 0.025 Air 0.023 Polystyrene foam 0.010
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