## Work Function

Rebekah Kaufman 1L
Posts: 25
Joined: Fri Apr 06, 2018 11:03 am
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### Work Function

In most of the problems I've seen, the work function always seems to be something given, is it ever something that we will need to calculate ourselves? If we do calculate it ourselves, do convert our answer from joules to electron-volts?

Jaquelinne Rodriguez-Lopez 1L
Posts: 38
Joined: Mon Apr 09, 2018 1:38 pm
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### Re: Work Function

The SI unit for the work function is Joules (J). If you're given e-volts, then you would have to convert the unit to joules.

Jose Munoz 1D
Posts: 22
Joined: Tue Nov 14, 2017 3:00 am

### Re: Work Function

Work function can be given in Joules or as eV, however from the information given in the question we can find the work function. Work function is just the amount energy required to separate an electron from the metal.

Elana Weingord 1C
Posts: 34
Joined: Fri Apr 06, 2018 11:05 am

### Re: Work Function

There could be a problem where you are given the light energy and the energy from the electrons and will have to find the work function.

Yeo Bin Yook 1K
Posts: 30
Joined: Fri Apr 06, 2018 11:05 am

### Re: Work Function

Generally, it is useful to know that kinetic energy is equal to hv-(work function) so even though work function is not given it should be easy to use other given information to figure it out.