(Solved): PLEASE ANSWER CORRECTLY 1) Water is flowing through a horizontal pipe of constant diameter and the f ...

1) Water is flowing through a horizontal pipe of constant diameter and the flow is laminar. The diameter ( $\mathrm{Di}$ ) of the pipe is $25\mathrm{cm}$, the average linear velocity is $0.02\mathrm{m}/\mathrm{s}$, the viscosity is $1\mathrm{cp}$, and the density is ${\rho }_{\text{water }}=998\mathrm{kg}/{\mathrm{m}}^3$. Calculate the following: a) Shear stress at the wall. b) Shear stress and velocity at $0.05-m$ from the pipe wall. c) What percentage of the total flow passes through a cylindrical shell at the center of the pipe with a radius of $0.05-\mathrm{m}$ ? Note: It is not required to derive the equations, you can directly use the related equations.