Question

Logout 22-001 » Modules > Assignments > Homework - Mastering Physics < Homework 12 - Alternating Current and EM Waves Problem 25.29 - Enhanced - with Feedback 8 of 12 Review Constants Periodic Tab A typical helium-neon laser found in supermarket checkout scanners emits 633-nm-wavelength light in a 11-mm diameter beam with a power of 15 W What is the amplitude of the oscillating electric field in the laser beam? Express your answer with the appropriate OPO E - Value 1 Submit Previous Answers Request Ans X Incorrect: Try Again: 9 attempts remaining Part B What is the amplitude of the oscillating magnetic Sold in the laser beam? Express your answer with the appropriate units. H oa? • Previous Next

A and B please!

Answer 1

L » a = 633 mm D = 1.1 mm P =1.5 mw Radius of beam, hapslimi sta lolmon - 0.55 mm Area of cross-section, A =TT4² zu (0.55*10-3) A = 9.5810-7 m² =) -

Intensity , I À 0.0015 9.5 4.1017 2. I = 1.58 x 103 Wlom? @ Amplitude of Electric field, Eo = 21 V &C 2x1058*163 N 8.85*10-12*3*10 %. Eo = 1.09 x 103 NIC ® Amplitude of Magnetic field:- Bo = J2Mo I

5. Bo = 2x4 TT X10-7x1.58x103 3x108 e. Bo =13.23 x 10-12 eo Bo z 3.638 x10-6 7