Question A flat with a sharp leading edge is placed along a free stream of fluid flow. Local Reynolds number at 3 cm from the leading edge is 105. What is the thickness of the boundary layer?

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Hi, I need help with this question please. Thank you. A cantilever thin-walled cylindrical tube of inner diameter ? = 30cm and thickness ? = 1cm is subjected to a torque T and internal pressure p as shown below. The free end of the tube is closed. Strain gauges A and B mounted on the surface of the cylinder give readings ?? = 7.5 × 10^−6 and ?b = 19.7x10^−6, respectively. The bar is made of steel having Young's modulus E=200 GPa and Poisson's ration ? = 0.3. a) Determine the torque, T, and internal pressure, p. b) Determine the absolute maximum shear strain ???? at point C.

When a bar of certain material 40mm square is subjected to an axial pull of 1,60,000N the extension on a gauge length of 200mm is 0.1mm and the decrease in each side of the square is 0.005mm. Calculate Young's modulus, Poisson's ratio. Shear modulus and bulk modulus for this material.