A certain metal has a work function of Ï• = 5.47 eV. If you shine light with $\displaystyle {f}$  = 3.75*10^(15) Hz on this metal, what is the maximum Kinetic energy of an emitted electron in eV?

$\displaystyle {K}$_max = eV

What is the stopping potential required to keep this electron from leaving the metal?

$\displaystyle {V}_{{s}}$ = Volts