Lesson: Propagating Electric and Magnetic Fields High School Physics

Electromagnetic waves propagate through water that has a refractive index of 1.33. The electric permittivity of the water is C²/N⋅m². What is the magnetic permeability of the water?

Which of the following formulas correctly shows the relation between , the speed at which electromagnetic waves propagate through a medium; , the electric permittivity of the medium; and , the magnetic permeability of the medium?

At what speed do electromagnetic waves propagate in a vacuum? Answer to two significant figures.