Vector A = 8.0 m and points 30° north of east, Vector B = 6.0 m and points 30° west of north, and vector C = 5.0 m and points 30° west of south. Find the resultant of A + B + C.

Which of the following is part of the explanation or description of electromagnetic waves? (select all that apply) a. electrically charged molecules in a medium transfer their energy to nearby electrically charged molecules. b. a changing electric field causes a changing magnetic field. c. magnetic molecules in a medium transfer their energy to nearby magnetic molecules. d. a changing magnetic field causes a changing electric field.