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Below is the stress (=E) vs strain (=ll)behavior of oxygen-free copper (OFC) wires (W8) at 293K and 77K compared to conventional (Conv tl) copper wires

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Below is the stress (=E) vs strain (=ll)behavior of oxygen-free copper (OFC) wires (W8) at 293K and 77K compared to conventional (Conv tl) copper wires of the same diameter at 293K. Calculate the elongation (elastic) that can be achieved when a 309mm long OFC wire is subjected to a stress of 321MPa at 293K. l m For the same length and stress, what is the elongation at 77K ? Below is the stress (=E) vs strain (=ll)behavior of oxygen-free copper (OFC) wires (W8) at 293K and 77K compared to conventional (Conv tl) copper wires of the same diameter at 293K. Calculate the elongation (elastic) that can be achieved when a 309mm long OFC wire is subjected to a stress of 321MPa at 293K. l m For the same length and stress, what is the elongation at 77K

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