a-1) Determine the magnitude of hoop (circumferential) stress [ksi] in the submarine. 45 ksi
a-2) Determine the magnitude of axial stress [ksi] in the submarine. 22.5 ksi
b) Determine the change in the thickness of the submarine [in]. (The submarine is made from steel which has elastic material constantsE=200 Gpa v=0.3