A student completes the following two experiments with a cart on an inclined plane. Experiment 1: A cart is given a push up an inclined plane and released. Experiment 2: A cart is released from the top of an inclined plane. Which statement below best describes the velocity and acceleration of the cart in these experiments?

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.