If a cannon ball with a mass of 10 kg is shot off a 100 m cliff with an initial of Vx of 20 m/s, how far from the base of the cliff will the cannon ball land?​

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.