Consider the vector 7 = 47 +33. Let u be the unit vector pointing in the same direction as 7. Then u i+ = [enter your answers as integers or simple fractions]. on Let S be the top half of a sphere. Assume S is bounded by the curve C given by x² + y² = 16. A parametrization of C is a = cos(t), y = sin(t). Given this parametrization, the appropriate unit normal to choose for S (for Stokes Theorem) points up (away from the origin). Select one: O True O False The surface S₁ is the top half of a sphere of radius 3. The boundary of S₁ is a circle (also of radius 3), called C. Let S₂ be the flat face bounded by C. The vector field F has divergence V F = -1 everywhere between S₁ and S2. The value of fF.ds is A where the integer A is Answer: