I mainly need help with part B

Part A A sinusoidal electromagnetic wave is propagating in vacuum. At a given point P and at a particular time, the electric field is in the +x direction and the magnetic field is in the -y direction. What is the direction of propagation of the wave? O +z direction O +y direction -x direction -z direction Submit Request Answer Part B If the intensity of the wave at point P is 0.19 W/m-, what is the electric field amplitude at that point? (c = 3.00 x 105 m/S, H 0 = 417 x 10-7 T - m/A, 8 0 = 8.85 x 10-12 C2/N . m?) Express your answer using two significant figures. AEd 6 0 0 6 ? V/m Submit Request