(a) From the curves shown in Figure 11.11 and using Equation 11.18, determine the rate of recrystallization for pure copper at the several...

(a) From the curves shown in Figure 11.11 and using Equation 11.18,determine the rate of recrystallization for pure copper at the severaltemperatures.(b) Make a plot of ln(rate) versus the reciprocal of temperature (in K–1), anddetermine the activation energy for this recrystallization process. (SeeSection 6.5.)(c) By extrapolation, estimate the length of time required for 50%recrystallization at room temperature, 20°C (293 K).