A velocity field is described by the following equations: ?? =10y/(x^2 +y^2) , ?? = -10x/(x^2+y^2) , and w=0 (a) Is this flowcompressible or incompressible? (b) Find the pressure gradient.Assume frictionless flow in the z-axis, the density is 1.2 kg/m3 ,and the z-axis is aligned with gravity. Also assume the normal andshear effects are negligible.