An elastic rod with a cross-sectional area A = 3 mm² is stretched from an initial length of 1.0 m to a final length of 1.1 m at a constant temperature of 15 °C. Calculate the heat exchanged between the elastic rod and its surroundings if it is made of a material with an isothermal Youngs modulus ET = 50 GPa and a linear expansivity at constant tension af = 5 x 10-6K-1.

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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An elastic rod with a cross-sectional area
A = 3 mm² is stretched from an initial length
of 1.0 m to a final length of 1.1 m at a constant
temperature of 15 °C. Calculate the heat
exchanged between the elastic rod and its
surroundings if it is made of a material with an
isothermal Youngs modulus ET = 50 GPa
and a linear expansivity at constant tension
af = 5 x 10-6 K-¹.
Select one:
O a. 21.61125 J
b. -21.61125 J
O c.
-1.125 J
O d. 1.125 J
Transcribed Image Text:An elastic rod with a cross-sectional area A = 3 mm² is stretched from an initial length of 1.0 m to a final length of 1.1 m at a constant temperature of 15 °C. Calculate the heat exchanged between the elastic rod and its surroundings if it is made of a material with an isothermal Youngs modulus ET = 50 GPa and a linear expansivity at constant tension af = 5 x 10-6 K-¹. Select one: O a. 21.61125 J b. -21.61125 J O c. -1.125 J O d. 1.125 J
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