A copper wire is stretched with a stress of 80 MPa at 20°C. If the length is held constant, to what temperature must the wire be heated to reduce the stress to 25 MPa? The value of a, for copper is 17.0 x 10-6 (°C)-1, the modulus of elasticity is equal to 110 GPa. i °C

Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
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A copper wire is stretched with a stress of 80 MPa at 20°C. If the length is held constant, to what
temperature must the wire be heated to reduce the stress to 25 MPa? The value of a for copper is
17.0 × 106 (°C)-¹, the modulus of elasticity is equal to 110 GPa.
i
°C
Transcribed Image Text:A copper wire is stretched with a stress of 80 MPa at 20°C. If the length is held constant, to what temperature must the wire be heated to reduce the stress to 25 MPa? The value of a for copper is 17.0 × 106 (°C)-¹, the modulus of elasticity is equal to 110 GPa. i °C
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