Here are some problems. Which I could not solve. PLease help?

Question

2. An aluminum alloy has an initial length of 2 inches and an initial diameter of 0.505 inches. Tensile test is conducted on this sample. After failure of 2.195 inches and a diameter of 0.398 in. at the fractured surface. Calculate the ductility of this alloy.

3. From the stress-strain curve, calculate (a)the tensile strength in mega-Pascal(MPa) and pounds per square inch (b) the 0.2% offset yield strength in Mpa and pounds per square inch, © the modulus of elasticity in giga-Pascal(GPa) and psi and (d) the approximate % elongation.

4. An unknown thermoplastic material has a 3mm x 10mm x 50mm dimension. A tensile load is applied along its length. The load at fracture is 35 kg(force) and the final length is 60mm. Determine the type of material used.

Answer 1

that's basic properties of matter problems , i guess u didn't bother ur self of solving them.

Anyway post it in the HW help & u may be luckier