(4 pts) 8. Attached is a plot of pressed density versus punch pressure for 3 ceramic materials. Use the plot for the technical alumina and obtain at least 3 or 4 pressed density/punch pressure data points that span the entire curve in the figure (including the alumina fill density). a. Using these data points, determine the value of the constant m in the expression we talked about in class between compacted density and compaction pressure (hint - use MPa for pressure): Dc=Df+mlogP b. Calculate the punch pressure necessary to achieve a pressed density of 65% using the value of m you calculated in part a. (4 pts) 8. Attached is a plot of pressed density versus punch pressure for 3 ceramic materials. Use the plot for the technical alumina and obtain at least 3 or 4 pressed density/punch pressure data points that span the entire curve in the figure (including the alumina fill density). a. Using these data points, determine the value of the constant m in the expression we talked about in class between compacted density and compaction pressure (hint - use MPa for pressure): Dc=Df+mlogP b. Calculate the punch pressure necessary to achieve a pressed density of 65% using the value of m you calculated in part a