In the following multiple-choice problems, circle the one answer which best completes theSentence(i)(iii)(iv)(v)The glass transition temperature of polystyrene is about 110 °C. Relative to a sampleat 120 °C, at room temperature polystyrene is:a. orders of magnitude more viscousb.slightly more viscousc. equally as viscousless viscousd.e. none of the above.The glass transition temperature of polystyrene is about 110 °C. Relative to a sampleat 120 °C, a sample of polystyrene at 130 °C is:a orders of magnitude more viscousb. slightly more viscousc. equally as viscousd. less viscouse.none of the above.Suppose a tensile test is performed on two identical materials except that one has adeep scratch on its surface whereas the other is perfectly smooth. Relative to thesmooth specimen, the test will find that the scratched specimen has a lower.a. elasticityb. yield stressc. tensile stressd.elongation to failuree. none of the above.Thermoplastic polymers such as polyethylene can be melted relatively easily, because:a. they are highly crosslinked by a curing agent,b. the bonds between molecules are primarily covalent,c. the monomer units are short,d. the intermolecular bonds are relatively weak secondary bonds,e. none of the above.The two sketches below represent the microstructure of two specimens with identicalaverage composition but subjected to different annealing treatments.a. A is stronger and more ductile than B,b. B is stronger and more ductile than A,c. A is stronger but more brittle than B,d. B is stronger but more brittle than A,e. none of the above.AB

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In the following multiple-choice problems, circle the one answer which best completes the Sentence (i) (ii) The glass transition temperature of polystyrene is about 110 °C. Relative to a sample at 120 °C, at room temperature polystyrene is: a orders of magnitude more viscous b. slightly more viscous c. equally as viscous d. less viscous e. none of the above. The glass transition temperature of polystyrene is about 110 °C. Relative to a sample at 120 °C, a sample of polystyrene at 130 °C is: orders of magnitude more viscous

In the following multiple-choice problems, circle the one answer which best completes the Sentence (i) (ii) The glass transition temperature of polystyrene is about 110 °C. Relative to a sample at 120 °C, at room temperature polystyrene is: a orders of magnitude more viscous b. slightly more viscous c. equally as viscous d. less viscous e. none of the above. The glass transition temperature of polystyrene is about 110 °C. Relative to a sample at 120 °C, a sample of polystyrene at 130 °C is: orders of magnitude more viscous

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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