6.1 The table lists Young's modulus, E composite for a glass-filled epoxy composite.The material consists of a volume fraction V of glass particles (Young's modulus,E, 80 GN m) dispersed in

a matrix of epoxy (Young's modulus, Em, 5 GN m^-2 .Calculate the upper and lower values for the modulus of the composite material, and plot them, together with the data, as a function of V. Which set of values most nearly describes the results? Why? How does the modulus of a random chopped-fiber composite differ from those of an aligned continuous-fiber composite?