Compute the elastic moduli for the following polymers, whose stress-strain behaviors may be observed in the Tensile

Question:

Compute the elastic moduli for the following polymers, whose stress-strain behaviors may be observed in the "Tensile Tests" module of Virtual Materials Science and Engineering (VMSE): (a) high-density polyethylene, (b) nylon, and (c) phenol-formaldehyde (bakelite). How do these values compare with those presented in Table 15.1 for the same polymers?