48. How many comparisons does the insertion sort use to sort the list n, n-1, 2. 1? The binary insertion sort is a variation of the insertion sort that uses a binary search technique (see Exercise 46) rather than a linear search technique to insert the ith element in the correct place among the previously sorted elements. 3. Find the work done by the force field F(x, y, z) = (xy, y z, z x) on a particle that moves along the line segment from (0,0,1) to (4, 1, 0). 4. Parametrize the surface of a sphere of radius R center at the origin. 5. Use surface integration with double integrals from Calculus 3 to show the surface area of a sphere of radius R is 4R.