1. A small rotating rod creates a 2D vortex flow at the origin (x-z coordinates) with an intensity of G = 5 m2/s. Calculate the velocity components at a point.
2. A small rotating rod creates a 2D vortex flow at the origin (x-z coordinates) with an intensity of G = 5 m2/s. Calculate the value of the integral ∫qd for a circle of radius 5 m around the origin.