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The electric field of an electromagnetic wave in a vacuum is Ey=(18.0 V/m)cos((4.18 ×10^8)x−ωt), where x...

The electric field of an electromagnetic wave in a vacuum is Ey=(18.0 V/m)cos((4.18 ×10^8)x−ωt), where x is in m and t is in s.

What is the wavelength, frequency, and magnetic field amplitude of the wave?

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