The magnetic field of a plane electromagnetic wave moving along the z axis is given by B = Bo cos(kz + ωt) j, where Bo = 5.00 × 10⁻¹⁰ T and k = 3.14 × 10⁻² m⁻¹. (a) Write an expression for the electric field associated with the wave (b) What is the frequency and the wavelength of the wave?