1) The walls of a house are 22 cm thick and have an average thermal conductivity two times that o their inside surface is at 22°C, while their outside surface is at 7°C. (Thermal conductivity of cork is ) The rate of heat conduction through house walls in Watts: (i1) Amount of heat conducted in Joules, in 5 min:

University Physics Volume 2
18th Edition
ISBN:9781938168161
Author:OpenStax
Publisher:OpenStax
Chapter1: Temperature And Heat
Section: Chapter Questions
Problem 97P: Compare the rate of heat conduction through a 13.0-cm-thick wall that has an area of 10.0 m2 and a...
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1) The walls of a house are 22 cm thick and have an average thermal conductivity two times that of cork. The walls' surface area is 950000 cm2 and
their inside surface is at 22°C, while their outside surface is at 7°C. (Thermal conductivity of cork is 0.036 W/m C). Calculate,
O The rate of heat conduction through house walls in Watts:
(i1) Amount of heat conducted in Joules, in 5 min:
2) A spherical infrared heater of radius 5 cm and an emissivity of 0.7 radiates 0.38 kW of power. Given, Stefan's constant = 5.67x10-8 Wm-2K4.
Calculate,
Temperature of the heater in Celsius:
Transcribed Image Text:1) The walls of a house are 22 cm thick and have an average thermal conductivity two times that of cork. The walls' surface area is 950000 cm2 and their inside surface is at 22°C, while their outside surface is at 7°C. (Thermal conductivity of cork is 0.036 W/m C). Calculate, O The rate of heat conduction through house walls in Watts: (i1) Amount of heat conducted in Joules, in 5 min: 2) A spherical infrared heater of radius 5 cm and an emissivity of 0.7 radiates 0.38 kW of power. Given, Stefan's constant = 5.67x10-8 Wm-2K4. Calculate, Temperature of the heater in Celsius:
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