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  • 22-03-2024
  • Engineering
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A steel wire is stretched with a stress of 70 MPa at 20°C. If the length is held constant, to what temperature must the wire be heated to reduce the stress to 17 MPa? Given E = 207 GPa and αₗ = 12.0 x 10⁻⁶(°C)⁻¹

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