Math 152 April 2003 Final exam

Math 152 April 2003 - Applied Science 278 Midterm Examination THE UNIVERSITY OF BRITISH COLUMBIA Department of Materials Engineering APSC 278

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Applied Science 278 Midterm Examination – February 13, 2009 1 THE UNIVERSITY OF BRITISH COLUMBIA Department of Materials Engineering APSC 278 Engineering Materials MID-TERM EXAMINATION, February 13, 2009 Name: Student #: This is a closed book examination. Use of relevant material stored in programmable calculators prohibited. Answer all questions. Show all work and units. The complete exam is 6 pages in length. Solutions
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Applied Science 278 Midterm Examination – February 13, 2009 2 (5) a) Describe the two key characteristics for each of covalent, ionic and metallic bonds. Covalent: Strong, Directional, Sharing of electrons, Localized, Specific bond angel Ionic: Attraction between opposites charged ions, Non-directional Metallic: Non-directional, Sharing of electrons between all lattice ions b) Using a sketch of a typical bond energy diagram explain the well known observation that materials expand when heated, i.e. they have a positive coefficient of thermal expansion (5) Consider a steel wire with a diameter of 1 mm and a length of 500 mm was observed to elastically stretch by 2 mm with an unknown weight was hung on the wire. Given that the modulus of elasticity for steel is 210 GPa and Poisson’s ratio = 0.3, calculate what the load must be. (note: it was observed that the wire would return to its original length when the load was
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This note was uploaded on 03/28/2012 for the course MATH 152 taught by Professor Caddmen during the Spring '08 term at The University of British Columbia.

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Math 152 April 2003 - Applied Science 278 Midterm Examination THE UNIVERSITY OF BRITISH COLUMBIA Department of Materials Engineering APSC 278

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