(2 min) A liquid is flowing out of a open tank from a hole in the bottom. h is the height of liquid in the tank (constant with time) and g is the acceleration of gravity. The velocity of the fluid exiting the hole and the one that would results from neglecting all viscous losses respect the condition:

(2 min) If A is an anti-symmetric tensor, its general form is:

(3 min) We want to transport water at a flow rate of 10 L/s from one position to another position at an elevation 10 m higher than the first one. Neglecting the viscous losses we need a punmp with a power of:

(3 min) Under steady-state conditions, the torque necessary to rotate the external cylinder of a coaxial cylinder viscometer (Couette) depends upon the radius R of the external cylinder raised to a power of:

(5 min) A Newtonian incompressible fluid of viscosity eta flows radially between two discs. Neglecting boundary effects and assuming creeping flow conditions, the only non-zero velocity component is the radial one, namely v_r(r,z). The total fricion force F that the fluid exerts on both discs is: