Which of the following is true of the National Register of Historic Places? (Select all that apply.) Getting on the register usually involves a fee based on square footage.

A 1966 act of Congress created the National Register of Historic Places.

It includes uniform guidelines for determining historical significance.

It provides a national standard for historical preservation.

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)