An aircraft is flying at sea level with a velocity of 260 m/s, if we consider its wing as a rectangular flat plate of span 10.0m and chord 2.0m, calculate the boundary layer thickness at the wing trailing edge and total skin friction drag for: (density = 1.225 kg/m3, dynamic viscosity = 1.8 x 10-5 kg/ms, assume that the flow is incompressible). (i) completely laminar flow (ii) completely turbulent flow

True or false (explain) (110)[111] is a slip system in bcc metals . the {111} family in fcc contains 8 planes. resolved shear stress (rss) in single crystals is just related to the applied stress. critical resolved shear stress (crss) in single crystal metals is direct proportional to the number of defects in the structure

What is the heat treatment of metals? what is the benefit of it? why and how it's useful? answer in details, do not write by hand.

Amixture of slurry and mud is to be pumped through a horizontal pipe of diameter 500 mm. the fluid behaves as a bingham plastic with a yield stress of 30 pa and viscosity 0.04 pa.s. describe the effects of the shear stress through a transverse section of the pipe by plotting the variation in shear stress and velocity profile: (i) just before the slurry starts to move (ii) as the slurry flows when the pressure gradient is double that in part (i)