Abowling ball has a mass of 6 kg what happens to its momentum when its speed increases from 2m/s to 4m/s?

a. the initial 12 kg*m/s and final is 24

b. the initial is 6 and the final 12

c. the initial is 12 and the final is 3

d. the initial is 6 and the final is 3

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.