A copper wire is stretched with a stress of ( 100 mathrm{MPa} ) at ( 20^{ circ} mathrm{C} ). If the length is held constant, to what temperature must the wire be heated to reduce the stress to ( 0 mathrm{MPa} ) ? The value of ( a_{l} ) for copper is ( 17.0 times 10^{-6} left({ }^{ circ} mathrm{C} right)^{-1} ), the modulus of elast

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A copper wire is stretched with a stress of  ( 100  mathrm{MPa}  ) at  ( 20^{ circ}  mathrm{C}  ). If the length is held constant, to what temperature must the wire be heated to reduce the stress to  ( 0  mathrm{MPa}  ) ? The value of  ( a_{l}  ) for copper is  ( 17.0  times 10^{-6} left({ }^{ circ}  mathrm{C} right)^{-1}  ), the modulus of elasticity is equal to  ( 110  mathrm{GPa}  ).  ( { }^{ circ}  mathrm{C}  )

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(Solved): A copper wire is stretched with a stress of \( 100 \mathrm{MPa} \) at \( 20^{\circ} \mathrm{C} \). ...

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