Everybody is bitchin' about the basic brain teasers, lolz.
We could always try calculus trivia quizzes next...
Luke Skywalker travels in his X-Wing along a path C given by the boundary of the area enclosed by a semicircle of radius 3 units, semicircle of radius 1 unit, and the x-axis. (This path is entirely in Quadrants I & II.) A variable force field, created by Darth Vader and given by (2y2)i+(8xy)j --- (i and j are the unit vectors [[1,0]] and [[0,1]]) --- is present. How much work is done on Luke by Vader's force field as he travels completely around the closed loop once?