The label on a laser pointer states it is $"532$ nm$,4\mathrm{.}00$ mW$."$ The laser is measured to create a beam of radius $6\mathrm{.}00$ mm$.$

a$)$ What is the frequency of the laser light?

B$)$ What is the intensity of the laser light?

c$)$ What are the electric field and magnetic field amplitude of the light?

d$)$ What are the energy density and momentum density within the beam?