Evaluate the surface integral LL F ds for the given vector field F and the oriented surface S. In other words, find the flux of F across S. For closed surfaces, use the positive (outward) orientation. F(x, y, z) = xz i + x j + yk S is the hemisphere x² + y² + z² = 49, y ≥ 0, oriented in the direction of the positive y-axis Need Help? Read It Talk to a Tutor