For the thin$-$walled single$-$cell closed section shown below, determine $(1)$ the shear flow distribution for shear force $V_y($positive$)$ acting though the shear center $(V_y=5kN),$ and $(2)$ the location of the shear center along the $z-$axis, $e_z,$ from the Pt$.$ A$.$ Draw a diagram of the shear flow $($use symmetry$).($Note: the shear force is graphically displayed acting through the C$.$G$.$ since the location of the shear center $(z-$axis ordinate$)$ is not known$).$ Start $q_{(0)}$ at Point A and flow through B to C$.$ All calculations must be in kilonewtons, $kN,$ and millimeters, mm $.$ Note the coordinate system.