Due to a temperature difference AT, heat is conducted through an aluminum plate that is 0.0331 m thick. The plate is then replaced bya stainless steel plate that has the same temperature difference and cross-sectional area. How thick should the steel plate be, so thatthe same amount of heat per second is conducted through it? Thermal conductivities of steel and aluminum are 14 J/(s-m-C°) and 240J/(s-m-C°), respectively.NumberUnits

Thickness of aluminum plate (t) = 0.0331 m Thickness of steel plate = t' Thermal conductivity of…

Answered: Due to a temperature difference AT,…

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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What is the rate of heat transfer in J/s through the body's skin and the fat layer just beneath its surface? Treat the skin and fat as a single layer that is 1.20 cm thick. Assume the temperature of the inner surface of the layer corresponds to internal body temperature, or 36.7 °C, and the temperature of the outer surface of the layer corresponds to skin temperature, or 34.0 °C. Take the total surface area of the layer to be 1.50 m² and use a value of 0.413 W/(m-C°) for the average thermal conductivity of the layer. Number Units
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a) A house walls that are 16 cm thick and have an average thermal conductivity three times that of cork. Assume there are no windows or doors. The walls' surface area is 1450000 cm² and their inside surface is at 18 °C, while their outside surface is at 4°C. (Thermal conductivity of cork is 0.042 W/m°C) (1) Calculate the rate of heat conduction through house walls? (ii) How many 200oW room heaters would be needed to balance the heat transfer due to conduction? (approximate number) b) A spherical infrared heater of radius 6.2 cm has an emissivity of 0.71. What temperature must it run at if the required power is 0.5 kW? Neglect the temperature of the environment. (Stefan's constant = 5.67*10-8 Wm- 2K-4) The temperature of the heater in Celsius =
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