A 18.0-mW helium–neon laser emits a beam of circular cross section with a diameter of 1.75 mm. (a) Find the maximum electric field in the beam. kN/C (b) What total energy is contained in a 1.00-m length of the beam? pJ (c) Find the momentum carried by a 1.00-m length of the beam. kg · m/s

A 18.0-mW helium–neon laser emits a beam of circular cross section with a diameter of 1.75 mm. (a) Find the maximum electric field in the beam. kN/C (b) What total energy is contained in a 1.00-m length of the beam? pJ (c) Find the momentum carried by a 1.00-m length of the beam. kg · m/s

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter24: Electromagnetic Waves

Section: Chapter Questions

Problem 28P

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Question

A 18.0-mW helium–neon laser emits a beam of circular cross section with a diameter of 1.75 mm.

(a) Find the maximum electric field in the beam.
kN/C

(b) What total energy is contained in a 1.00-m length of the beam?
pJ

(c) Find the momentum carried by a 1.00-m length of the beam.
kg · m/s

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