Photoelectrons are observed when a metal is illuminated by light with a wavelength less than 383 nm. what is the metal's work function?

Work function of the metal is 3.24 eV.                                    

Explanation:

It is given that,

Wavelength,

Let W is the work function of the metal. It is given by using Einstein's photoelectric effect equation. It is given by :

Since,

So, W = 3.24 eV

So, the work function of the metal is 3.24 eV. Hence, this is the required solution.

the box does not move because you need to use a force greater than 300 n. you are only using 50 n. it needs to at least be 301 n for the box to move because then it is an unbalanced force and it will move the way that the greater force is pushing it. if you use only 300 n it will be a balanced force and will not move because the force you are exerting on the   box is the same as its force.

hope this !

im sorry if i went too in depth, i am going to include a link to a video on khan academy that will explain this.   hope that you like the video and that it explains more in detail to you.

that is the link.