A plane wave propagates in free space (air) and has its electric field given by E =(-x+3y+0.52)e-05- 1. Determine the propagation vector . [3 marks] 2. Determine the polarization state of the plane wave. Justify your answer. [2 marks] 3. Determine the wavelength in cm. [4 marks] 4. Write down an expression for the magnetic field . [5 marks] 5. Calculate the average power in Watts that crosses a circular disk of radius r = 0.5m having its center in the x-y plane. The disk is perpendicular to the unit vector =2+2. [6 marks]