Answered: Find F12 and F21 for the following…

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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Find F12 and F21 for the following objects. a) Figure a shows a sphere placed inside a cube. The side of the cube is the same as the diameter of the sphere. b) Figure b shows a diagonally partitioned long square duct. c) Figure c shows a pyramid with equal sides. d) Figure d shows quarter of a cylinder exchanging radiation with the base surface of a half cylinder. [Ans.: a) F12 = 1, F21 = π/6, b) F12= 0.5, F21 = 0.71].

18. Find F12 and F21 for the following objects. a) Figure a shows a sphere placed
inside a cube. The side of the cube is the same as the diameter of the sphere. b)
Figure b shows a diagonally partitioned long square duct. c) Figure c shows a
pyramid with equal sides. d) Figure d shows quarter of a cylinder exchanging ra-
diation with the base surface of a half cylinder. [Ans.: a) F12 = 1, F21 = 16, b) F12
= 0.5, F21 = 0.71].
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IVd. Heat Transfer: Thermal Radiation
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