please help me with these questions. Thank you

3) (a) State the relationship that gives the tensile fracture strength of a brittle ceramic. Clearly define all the terms and what do they depend on. (10 points). (b) Identify and describe three design implications of the brittle nature of ceramics. (6 points) (c) List four approaches used to enhance the suitability of ceramics for structural applications ( 4 points) 4) Schematically draw glass viscosity as function of (1/ temperature). On this curve indicate the working and annealing regimes. (10 points) 5) Using a schematic temperature-time curve, describe the steps needed to make a glass ceramic. (10 points)