3. [11 Points] DETAILS LARCALC11 11.4.013. Consider the following. u=i+j+k v=2i+jk Find u x v. Determine if u x v is orthogonal to both u and v by finding the values below. MW: mm: 0 u x v is not orthogonal to both u and v. O u x v is orthogonal to both u and v. Need Help? 4. [11 Points] DETAILS LARCALC11 11.4.016. Find a unit vector that is orthogonal to both u and v. u = (8, 6, 4) V = (10, 18, 2) 5. [-/1 Points] DETAILS LARCALC11 11.4.023. Verify that the points are the vertices of a parallelogram, and find its area. A(1, 1, 3), B(-2, -3, 9), C(0, 0, 2), D(3, 4, -4) Need Help? Read It Watch It 6. [-/1 Points] DETAILS LARCALC11 11.4.025.MI. Find the area of the triangle with the given vertices. ( Hint: | |u x v| | is the area of the triangle having u and v as adjacent sides. A(0, 0, 0), B(3, 0, 5), C(-3, 2, 0) Need Help? Read It Watch It Master It7. [-/1 Points] DETAILS LARCALC11 11.4.028. MY NOTES ASK YOUR TEACHER PRACTICE Both the magnitude and the direction of the force on a crankshaft change as the crankshaft rotates. Find the magnitude of the torque on the crankshaft using the position and data shown in the figure, where F = 1800 lb. ft-lb 0.16 ft - 7 - 600 - - - - - Need Help? Read It Watch It 8. [-/1 Points] DETAILS LARCALC11 11.4.031. MY NOTES ASK YOU Find u . (v x w). u V= W = K Need Help? Read It Watch It