Electromagnetic waves propagate through rubber that has a refractive index of 1.5. The electric permittivity of the rubber is C2/N⋅m2. What is the magnetic permeability of the rubber?
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.