A 50cm wavelength EM wave in air has 50mW/m^2 of energy.

AI Thread Summary
The discussion revolves around calculating properties of a 50cm wavelength electromagnetic wave in air, specifically its frequency, average electric field, magnetic field strength, and wavelength in water. The frequency is determined to be approximately 17.3 kHz. The average electric field is calculated using the formula E = √(50/.5*ε°*c), although there is uncertainty about its correctness. To find the wavelength in water, the index of refraction must be applied. The conversation emphasizes the need for accurate calculations and the relevance of material properties in wave behavior.
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Homework Statement



A 50cm wavelength EM wave in air has 50mW/m^2 of energy.
what is the frequency?
what is the average E field?
What is the B field strength?
What would be the λ in water?


Homework Equations



I found the λ. How do I find it in water

The Attempt at a Solution



E = √50/.5*ε°*c... is that correct?
frequency = 17.3 Khz
 
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You will have to use the index of refraction for water.
 
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