Atectonic force is pushing a tectonic plate toward the north. if a second force of equal magnitude were to be applied to the plate in an eastward direction,
a. the plate would change speed but not direction.
b. the plate would move in a different direction.
c. the plate would stop moving.
d. the plate would continue moving toward the north at the same speed.

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.