Consider a high-power laser, operating at a wavelength of 1.6μm, which puts out 10kJ in 0.2ns. The beam is focused on an area of diameter 0.5 mm. What is the RMS electric field strength in V/m unit?​

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.