Can someone explain this with some detail? I have done some like this, but this is throwing me off...TIA For the Stress-Strain Curve provided, estimate: (a) Stiffness/Young's Modulus (b) Tensile Strength (c) Yield Strength (d) Toughness (e) % Elongation to Break

Please do all parts if possible, I dont need explanation just answer, Thank you:   TRUE OR FALSE:  a) Glasses are usually harder than plastics but softer than silicon carbide and boron carbide b)  Any amorphous (lacking in long-range periodic order) materials, inorganic, organic, or metallic, formed by any techniques, exhibits glass transformation formation behavior are glasses  c) In general, the viscosity is low at the melting position of glass, and high at room temperature. d) In general, if the viscosity is very high at the melting position of the corresponding crystalline phase which would form the melt, it is much easier to form glass for this melt. e) The glass fiber is possible to have a tensile strength even larger than that for iron or structural steel. Therefore, in the practical applications, we should be able to use glasses for the same purposes of the iron or structural steel.

with the For a poly(hexamethylen-adipamide) polymerization degree of 200, write the structure and compute the exact and approximate molecular mass.

4. An alloy has an elastic modulus of 115 GPa. For the alloy, plastic deformation begins at a stress of 275 MPa. (a) If a sample of cross-sectional area 325 mm? is obtained from the alloy, determine the maximum load that may be applied on the sample without plastic deformation. (b) The original sample length is specified as 115 mm, what is the maximum length to which the sample can be stretched without plastic deformation.