Suppose a fluid whose coefficient of viscosity is η and density ρ, flows through a cylindrical tube of radius r and length L. Let P be the pressure difference in the liquid at both ends of the tube. If the volume of the liquid flowiing per unit time through the cylindrical tube depends on the pressure gradient P/L, the coefficient of viscosity η and radius r, obtain an expression for the volume of liquid flowing per unit time through the tube. ​

Atriangle with equal sides of length 10 cm has -2.5-nc charged objects at each corner. part a determine the direction of the electrical force exerted on the object at the top corner due to the two objects at the horizontal base of the triangle. determine the direction of the electrical force exerted on the object at the top corner due to the two objects at the horizontal base of the triangle. horizontally rightward vertically downward vertically upward horizontally leftward