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A typical helium-neon laser found in supermarket checkout scanners emits 633-nm-wavelength light in a 1.1-mm-diameter beam...

A typical helium-neon laser found in supermarket checkout scanners emits 633-nm-wavelength light in a 1.1-mm-diameter beam with a power of 1.3 mW .

A) What's the amplitude of the oscillating electric field in the laser beam?
B) What's the amplitude of the oscillating magnetic field in the laser beam?

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