5- Mechanical properties of materialsdepend on temperature, modulus ofelasticity decrease at highertemperaturesO TrueO False 8-The critical radius (r*) is theminimum size of a crystal that mustbe formed by atoms clusteringtogether in the liquid before the solidparticle is stable and begins to grow.O TrueO False

Answer The mechanical property is a aspect of plasticity of material and is temperature dependent.…

Answered: 5- Mechanical properties of materials…

5- Mechanical properties of materials depend on temperature, modulus of elasticity decrease at higher temperatures O True O False

Physics for Scientists and Engineers

10th Edition

ISBN:9781337553278

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter18: Temperature

Section: Chapter Questions

Problem 16P: Review. On a day that the temperature is 20.0C, a concrete walk is poured in such a way that the...

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Review. A wire of length L, Youngs modulus Y, and cross-sectional area A is stretched elastically by an amount L. By Hookes law, the restoring force is kL. (a) Show that k = YA/L. (b) Show that the work done in stretching the wire by an amount L is W=12YA(L)2/L.
Review. On a day that the temperature is 20.0C, a concrete walk is poured in such a way that the ends of the walk are unable to move. Take Youngs modulus for concrete to be 7.00 109 N/m2 and the compressive strength to be 2.00 109 N/m2. (a) What is the stress in the cement on a hot day of 50.0C? (b) Does the concrete fracture?
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