Answer:
Net flow rate = 0.00035 m³/s
Explanation:
The speed of plate 1, U₁ = 5 m/s
The speed of plate 2, U₂ = 1.5 m/s
The two plates are moving in different directions, the net speed will be gotten by taking the difference of the average of the two plates
The average speed due to the movement of plate 1 = U₁/2 = 5/2 = 2.5 m/s
The average speed due to the movement of plate 2 = U₂/2 = 1.5/2
= 0.75 m/s
The net average speed of the fluid= U₁/2 - U₂/2
The net average speed of the fluid = 2.5 - 0.75 = 1.75 m/s
Net flow rate = Net average speed * Area of the plate
Width of the plate, v = 5 cm = 0.05 m
Distance between the plates = 4 mm = 0.004 m
Area = 0.05 * 0.004
Area = 0.0002 m²
Net flow rate = 1.75 * 0.0002
Net flow rate = 0.00035 m³/s
