Adrum rotates around its central axis at an angular
velocityof 12.60rad/s. if the drum then slows at a constant rate
of4.20rad/s2, a) how much time does it take and b)
throughwhat angle does it rotate in coming to rest?

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.