The loss of head due to viscosity for laminar flow in pipes is (where d = Diameter of pipe, l = Length of pipe, v = Velocity of the liquid in the pipe, μ = Viscosity of the liquid, and w = Specific weight of the flowing liquid)

The loss of head due to viscosity for laminar flow in pipes is (where

1.	The loss of head due to viscosity for laminar flow in pipes is (where d = Diameter of pipe, l = Length of pipe, v = Velocity of the liquid in the pipe, μ = Viscosity of the liquid, and w = Specific weight of the flowing liquid)
A.	μvl/wd²
B.	μvl/wd²
C.	6μvl/wd²
D.	2μvl/wd²
Answer» E.