A certain metal has a work function of

$=6\mathrm{.}70$

$$

$10$

$$

$(19)$J

$.$ What frequency of light is required to eject electrons from it$?\backslash [$ f$=\backslash$quad $\backslash$text $\{$ unit $\}\backslash ]$ If you shine light with

f$=3\mathrm{.}10$

$$

$10$

$$

$(15)$Hz

on this metal, what is the maximum Kinetic energy of an emitted electron in Joules? $\backslash [$ K$\_\{\backslash$text $\{$max $\}\}=\backslash$quad $\backslash$mathrm$\{$J$\}\backslash ]$ What is the maximum velocity of an emitted electron? $\backslash [\backslash$mathrm$\{$v$\}\_\{\backslash$max $\}=\backslash$mathrm$\{$m$\}/\backslash$mathrm$\{$s$\}\backslash ]$