5 A certain material has a dielectric permittivity eo and magnetic permeability 340. An electromagnetic (EM) wave with frequency 430 × 1012 Hz enters this material. What is the wave speed inside the material? A. 8.216 x 107 m/s C. 2.997 × 10° m/s B. 1.095 × 10° m/s D. 8.126 × 10 m/s
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