Consider a 2 m-high and 0.7 m-wide bronze plate whose thickness is 100mm. One side of the plate is maintained at a constant temperature of 600 K while theother side is maintained at 400 K, as shown in figure below. The thermal conductivity of the bronze plate can be assumed to vary linearly in that temperaturerange as k(T) = k.(1+ $T ) where ko = 38 W /m · K and ß = 9.21x 10-*K-1.-kT) = k,(1 + BT)Bronzeplate7, = 600 KT,- 400 K

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Answered: Consider a 2 m-high and 0.7 m-wide…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Answer this ASAP,thx An empty sphere is made of aluminum (k = 202 W/m. °C) with an inner diameter of 4 cm and an outer diameter of 8 cm. The inside temperature is 100°C and If the ball above is coated with an insulating material having k = 50 mW/m. °C 1 cm thick. The outside of this insulation is in contact with an environment having h = 20 W/m.°C and Ts = 10°C, calculate the heat transfer under these conditions.
Q.3) The two sides of a large plan wall are maintained at constant temperatures of T₁ = 120°C and T₂ = 50°C, respectively. If you know that the wall thickness L = 0.2 m, thermal conductivity k = 1.2 W/m.K, and surface area A = 15 m². Determine (a) the variation of temperature within the wall and the value of temperature at x = 0.1 m and (b) the rate of heat conduction through the wall under steady conditions. (10 Pts)
Heat is lost through the glass pane of a window. The thickness of the glass is 3 mm, and the window is 0.9 m by 1.8 m. The thermal conductivity of glass is 0.8 W/mK. If the temperature difference across the glass is 17 K, what is the total heat transfer through the pane of glass? Give your answer in Watts to the nearest integer.
Temperature distribution of a wall is given as T(x) = -100x + 50 and the cold surface is exposed to a convection environment at temperature of 20 °C. If the wall thickness is 10 cm and the conductivity is 1 W/mK what is the convection coefficient between the cold surface and the environment?
The exterior wall of a house is composed of a 20 cm thick layer of ordinary brick (conductivity 0.72 W/m K) and a 2.5 cm layer of plaster (conductivity 0.17 W/m K ) on each side (two layers in total). Other purely conductive resistances can be neglected, such as the layer of paint on both sides of the wall. Assume the outer face of the wall is at 35 °C and the inner face is at 20 °C and fill in the gaps. The magnitude of the heat flux through the wall corresponds to the _________ W/m2 and is perpendicular to the wall ________________(fill in with "outside-in" or "inside-out") of the environment. If the wall has a total area of 300m2, the heat transfer rate corresponds to ___________________
A furnace wall consists of 2 ft of brick . The brick has athermal conductivity of 0.6 Btu/ hr sq ft ( ° F /ft), a specific heat of0.2 Btu/ lb ° F, and a density of 110 lb/cu ft. The temperature atthe inside surface of the wall is 1100 ° F , and at the outside surface,200 ° F .(a) Calculate the thermal diffusivity of the brick .(b) Calculate the heat loss per hour through a wall 10 ft high and10 ft long(c ) Calculate
In a composite slab, the temperature at the interface (Tinter ) between two materials is equal to the average of the temperature at the two ends. Assuming steady one dimensional heat conduction, which of the following statements is true about the respective thermal conductivities?
A multi-layered wall with the dimensions shown in the figure has temperatures of 200°C and 50°C over the left and right surfaces, respectively. If the thermal conductivities of the wall materials A and C are k-60 W/m-K, k-24 W/m-K. If total rate of heat transfer through the wall is 175 W, what is the thermal conductivity of material B? T- 200°C T-soc 6 cm- 2 om 25 om
A semiconductor material has a conductivity of 0.0124 W/cm-K. It has the shape of a rectangular bar with cross sectional area of 1 cm2and length of 3 cm. One end is maintained at 300 °C and the other end at 100 °C. The bar carries a current of 50 A and has resistivity of 1.5x10-3ohm-cm. Assuming the longitudinal surface is insulated, calculated the midpoint temperature in the bar.
Consider the following cases: Case 1: A rod with specified surface temperature. Case 2: A rod with specified surface temperature with heat generation. Case 3: A rod with specified surface temperature with variable thermal conductivity k=k(1+BT), ß: is constant. The quadratic temperature profile T(r)= f(r) will be in:
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