an oil drop of radius 0.15mm form an oil film of radius 7.0 on water. assuming that the oil film is one molecule thick ,estimate the diameter of the oil molecule?

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.