A pendulum is used in a large clock. The pendulum has a mass of 2 kg. If the pendulum is moving at a speed of 4.1 m/s when it reaches the lowest point
on its path, what is the maximum height of the pendulum?
O A. 0.51 m
B. 0.63 m
C. 0.86 m
D. 0.75 m

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.