(Solved): 1. Define ultimate tensile strength. 3. Define yield strength and tell how it is measured. 4. What ...

1. Define ultimate tensile strength. 3. Define yield strength and tell how it is measured. 4. What types of materials would have a yield point? 5. What is the difference between proportional limit and elastic limit? 7. What property of a material is a measure of its stiffness? 8. What property of a material is a measure of its ductility? 9. If a material is reported to have a percent elongation in a $$2.00$$-in gage length of $$2\%$$, is it ductile? 10. Define Poisson's ratio. 11. Suggest a suitable plastic material for each of the following uses: (a) Gears (b) Football helmets (c) Transparent shield (d) Structural housing (e) Pipe (f) Wheels (g) Electrical switch-gear, structural part