Question 14 0/1 pt O 100 99 0 Details Let a = (0, 5, 4) and b = (4, 5, 0). Find a . b. Question Help: ) Message instructor D Post to forum Submit Question0 Question 15 B on pt 0 100 3 99 (D Details Let a = and 5 =-': 4, 7 3'. Find El. - 5. Question Help: 8 Message instructor D Post to forum 0 Question 16 B on pt 0 100 3 99 (D Details The vector 11 has length 15 and points at an angle of 15n The vector {3 has length 14 and points at an angle of 40" a. a = | l Question Help: 8 Message instructor D Post to forum 0 Question 19' B on pt 0 100 3 99 (D Details A constant force of F' = (9, 1} moves an object along a straight line from the point [1, ] to the point (10,3). Find the workd done if the distances is measured in feed and the force is measured in pounds. l. | ftlbs. Question Help: 8 Message instructor D Post to forum