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4b and c please help
c) The following results were obtained from a shear box test on specimens of soil compacted to in-situ density: Determine, whether failure would occur within this soil mass at a point, where shear stress is 300kNm ? and normal stress of 350kNm2 ? Give reason(s) for your answer 4. a) Briefly describe the two main forms of deformation. b) When subjected to a triaxial compression test at a confining pressure of 260kNm. a soil sample failed at 950kNm−2. If the angle of shearing resistance at failure for this sample was 22.5∘, determine the shear and normal stresses that acted on, and perpendicular to, the failure plane, respectively c) During a site investigation, a soil sample with was collected from the UNZA East Park Mall construction site. The sample had a length to diameter ration of 3:1 and subjected to a vertical load. in the lab, of 35 kN. At failure, the sample experienced 14 mm and 2 mm changes in length and diameter. respectively. Calculate: i) The sample's longitudinal and diametric strains ii) The modulus of elasticity (also called Young's modulus) for the sample iii) Poisson's ratio (Diameter of an NX-core sample is 54 cm )