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Engineering

The equation of the electric field of an electromagnetic wave propagating through free space is given by : $E = \sqrt{377} \sin(6.27 \times 10^3 t – 2.09 \times 10^{-5}x) \text{ N/C}$ . The average power of the electromagnetic wave is $\frac{1}{\alpha} \text{ W/m}^2$ . The value of $\alpha$ is _______ . (Take $\sqrt{\frac{\mu_0}{\epsilon_0}} = 377$ in SI units)

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