Consider the flow of an incompressible newtonian fluid between two parallel plates that are 4 mm apart. if the upper plate moves to the right with u1 = 5 m/s, while the bottom one moves to the left with u2 = 1.5 m/s, what would be the net flow rate at a cross section between the two plates? take the plate width to be 5.5 cm and the distance between the plates to be 4 mm.

Explanation:

We need to find the average velocity of each plate, and .

So substituting,

The net velocity is:

The flow rate =

The flow rate

igneous rocks also form where plates converge. the subducting plate melts as it sinks into the crust of the earth, and the melt rises into the overriding plate forming volcanoes. metamorphic rocks are formed mainly in the lithosphere, wherever there is high pressure and high temperature. -woods