A laser emits $\backslash (6\mathrm{.}20\backslash$times $10^\{19\}\backslash )$ photons per second in a beam of light that has a diameter of $2\mathrm{.}10$ mm and a wavelength of $514\mathrm{.}5$ nm $.$ Determine $($a$)$ the average electric field strength and $($b$)$ the average magnetic field strength for the electromagnetic wave that constitutes the beam.

$($a$)$ Number

Units

$($b$)$ Number

Units