Multiple-Concept Example 5 discusses the principles used in this problem. A neodymium-glass laser emits short pulses of high intensity electromagnetic waves. The electric field of such a wave has an rms value of Erms = 2.0 × 109 N/C. Find the average power of each pulse that passes through a 1.6 × 10-5-m2 surface that is perpendicular to the laser beam.