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S14 PH 223 34:5-7

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Richard Datwyler

on 14 July 2016

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Transcript of S14 PH 223 34:5-7

A helium-neon laser emits a 1.0 mm diameter laser beam with a power of 1.0 mW. What are the amplitudes of the electric and magnetic fields of the light wave?
A 1000 W carbon-dioxide laser emits light with a wavelength of 10 micrometers into a 3.0 mm diameter laser beam. What force does the laser beam exert on a completely absorbing target?
Only 25% of the intensity of a polarized light wave passes through a polarizing filter. What is the angle between the electric field and the axis of the filter?
A 200 mW vertically polarized laser beam passes through a polarizing filter whose axis is 35 degrees from horizontal. What is the power of the laser beam as it emerges from the filter?
In an EM wave, at one instant the Electric field has an amplitude of 10 V/m, what is the amplitude of the magnetic field?
"Can you go over question 1 in the pre-quiz. Also I am having a hard time understanding what polarized light is and how polarizers affect it."
a. No magnetic monopole
b. Induced magnetic field
c. forces from charge and velocity and field interactions
d. Induced electric fields
1. Faraday's law
2. Ampere law
3. Gauss law
4. Lorentz law

"Can we go over polarization?"
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