2. The electric field vector of an electromagnetic wave is described by Ē(x, t) = −k 450. [V/m] cos(kx — wt), - where the wave number is k = 450.× 10ª[rad/m] and the angular frequency is w = 1.22 x 10¹5 [rad/s]. a. What is the speed of the electromagnetic wave? b. What is the magnetic field of the electromagnetic wave? c. What is the Poynting vector (in its complete form) of the electromagnetic wave? d. What is the intensity of the wave?

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