Answered: An elastic rod with a cross-sectional…

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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An elastic rod with a cross-sectional area A = 2mm² is stretched from an intial legth of 1.0m to a final legth of 1.1m at a constant tempreture of 15 degrees celcius . Calculate the heat exchanged between the elastic rod and its surroundings if it is made of a material with a isothermal Youngs modulus E_T = 150GPa and a linear expansivity at constant tension a_f = 15 x 10 ^-6K^-1.

^{a) 129.6675 J}

^{b) -129.6675 J}

^{c) -6.75 J}

^{d) 6.75 J}

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