Vector A has a magnitude of 8unit and make and angle 45 with the x axis vecter B has also same of magnitude of 8unit and directed along tha ne x axis find A )magnitude and direction of A+B
B )magnitude and direction of A-B

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.