Explain how the protection process of cathode.

Explain the difference laminar and turbulent flow. explain it with the shear stress and the velocity profiles.

Ahe-xe mixture containing a 0.75 mole fraction of helium is used for cooling electronics in an avionics application. at a temperature of 300 k and atmospheric pressure, calculate the mass fraction of helium and the mass density, molar concentration and molecular weight of the mixture. if the cooling capacity is 10 l, what is the mass of the coolant?

What are the major differences between injection molding and extrusion?