4.21 A fluid with a density of 1040 kg/m² density flows steadily through the rectangular box shown in the figure. The areas are Aj = 0:046 m², A2 = 0:009 m², and Az =0:056 m², and the velocities are V, = 3ỉ m/s and V2 =6jm/s. Determine the net rate of momen- tum flux out of the control volume. |A2 X Аз A1 -60° P4.21 ,4.34 A water flow rate of 4 L/min enters the lawn sprinkler shown in …

