Physics

Problem

Use

\mu_0 = 4\pi \times 10^{-7}\,\text{H m}^{-1}

and

\epsilon_0 = 8.85 \times 10^{-12}\,\text{F m}^{-1}

. Calculate the speed

v

of an electromagnetic wave in free space. a)

2.0 \times 10^{8}\,\text{m s}^{-1}

5.6 \times 10^{8}\,\text{m s}^{-1}

3.0 \times 10^{8}\,\text{m s}^{-1}

1.1 \times 10^{8}\,\text{m s}^{-1}