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A steel rectangular bar is subjected to a thermal stress leading to a temperature difference of 20C. Its modulus of elasticity is 2x1011 Pa. Estimate

A steel rectangular bar is subjected to a thermal stress leading to a temperature difference of 20C. Its modulus of elasticity is 2x1011 Pa. Estimate stress in Pa and strain if the coefficient of thermal expansion of steel a is 7.210-6 C-1. [4MI

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