A digital cell phone broadcasts a $0\mathrm{.}60$ W signal at a frequency of $1\mathrm{.}9$ GHz$.$ What are the amplitudes of the electric and magnetic fields at a distance of $10$ cm$,$ about the distance to the center of the user$$s brain? E $=60$ V$/$m B $=2\mathrm{.}0$ x $10-7$ T