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Elements Of Electromagnetics
7th Edition
ISBN: 9780190698614
Author: Sadiku, Matthew N. O.
Publisher: Oxford University Press
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Two metal rods are being heated in an oven with uniform
ambient temperature of 1000°C and convection heat
transfer coefficient of 25 W/m2·K. Rod A is made of aluminum
(r = 2702 kg/m3, cp = 903 J/kg·K, and k = 237 W/m·K)
and rod B is made of stainless steel (r = 8238 kg/m3, cp =
468 J/kg·K, and k = 13.4 W/m·K). Both rods have diameter
of 25 mm and length of 1 m. If the initial temperature of both
rods is 15°C, determine the average temperatures of both rods
after 5 min elapsed time.
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- 54. PLEASE ANSWER ASAParrow_forwardConsider the base plate of a 850W household iron with a thickness of L= 0.5 cm, base area of A = 150 cm?, and thermal conductivity of k= 25 W/m°C. The inner surface of the base plate is subjected to uniform heat flux generated by the resistance heaters inside. When steady operating conditions are reached, the outer surface temperature of the plate is measured to be 85°C. Disregarding any heat loss through the upper part of the iron, a. express the differential equation and the boundary conditions for steady one-dimensional heat conduction through the plate, b. obtain a relation for the variation of temperature in the base plate by solving the differential equation, c. evaluate the inner surface temperature. d. Base plate - 85°C Fig. 1– Base Platearrow_forwardConsider the base plate of a 750-W household iron with a thickness of L=0.6 cm, base area of A=170 cm2, and thermal conductivity of k=22 W/m.oC. The inner surface of the base plate is subjected to uniform heat flux generated by the resistance heaters inside. When steady operating conditions are reached, the outer surface temperature of the plate is measured to be 85 oC. Disregarding any heat loss through the upper part of the iron, (a) express the differential equation and the boundary conditions for steady one-dimensional heat conduction through the plate, (b) obtain a relation for the variation of temperature in the base plate by solving the differential equation, and (c) evaluate the inner surface temperature.arrow_forward
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