12. A wheelchair is pushed 5 m up a ramp with a 200 N force acting at 20" to the ramp. The incline of the ramp is 15. How much work is done? a. 342.02 J C. 819.15 J b. 939.69 J d. 573.58 J 13. A rhombus is formed by the points A(2, 4, -1), B(7, 3, -8), C(6, 10, -13), and D(1, 1 1, -6). Determine the area of the rhombus. 5096 square units c. 24.78 square units b. 71.39 square units d. 45.11 square units 14. Given the points A( 1, 2, 3), B(5, 4, 3), and C(2, 1, 2), find AB a. 20 C. 18 b. ~20 d. 270 15. If |2- 63, |v]- 47, and the angle between u and v is 180, find (proj; u]. a. 47 C. 63-2 b. 2961 d. 63 Communication [10CI Complete each statement. 16. If the dot product of two vectors equals zero then the vectors are 17. If two vectors are parallel then their dot product equals the product of their 18. The magnitude of the cross product of two vectors equals the area of the formed by the two vectors. 19. Torque is an example of the application of the product, while work is an example of the application of the product 20. The vector product, a b x E. is called the product and can be used to find the volume of