Prove Wu, for a velocity vector u and position vector , DL J (xx pu)dV = J xx r184-F V • (puud dV Wind Kidd Where, V,,,(t) is the material volume enclosed by the material surface Sv(0 avd P is the wit outward normal on S.(0. (b) Show that the conservation of angular momentum gives eu,71, = 0 (c) Show that V i u = g: fl. (d) Prove that V Vp = 0 for any scalar fieldp(Rd