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Problem 1. (1 point) Problem 5. (1 point) Electric charge is distributed over the disk A lamina occupies the region inside the circle x- + y= = 2y but out- 2 + y' ). Answer(s) submitted: A. What is the total mass? (incorrect) D. Where is the center of mass? (. Answer(s) submitted: Problem 3. (1 point) Find the mass of the triangular region with vertices (0, 0), (6, 0), and (0, 2), with density function p (x,y) = xty. (incorrect) Problem 7. (1 point) Answer(s) submitted: A lamina occupies the part of the disk x- ty