A flow field is given by $u=y^{2}, v=-x y, w=0 .$ Value of the z-component of the angular velocity (in radians per unit time, up to two decimal places) at the point (0,-1,1) is
A flow field is given by $u=y^{2}, v=-x y, w=0 .$ Value of the z-component of the angular velocity (in radians per unit time, up to two decimal places) at the point (0,-1,1) is