Problem. $4$

The tensile stress$-$strain behavior for an alloy is shown in the Figure. The specimen is $7\mathrm{.}5$ mm in diameter and $90\mathrm{.}0$ mm long. Using the information in the Figure, estimate $($a$)$ the modulus of elasticity; $($b$)$ the yield strength; $($c$)$ the tensile strength; $($d$)$ the modulus of resilience; $($e$)$ the range of strain values for the elastic and plastic regions, the strain at the onset of necking, and the strain at fracture; $($f$)$ the toughness, and $($ g $)$ the ductility as percent elongation at fracture.