physic question what is the energy difference between these two energy levels in Joules?

Question

If one energy level is at -3.30 eV and the next one is at -8.10 eV, what is the energy

difference between these two energy levels in Joules?

Answer 1

Hey Ina,

I assume that you can find the difference in eV here - it's just a matter of subtraction.

After that, realize that eV is just another way to measure energy, so we can set up a conversion factor between the two units. So, google how many Joules are in 1 eV, then set your conversion factor with 1eV on the bottom and the number of Joules on the top. Multiply that by your eV value that you found and you'll have your answer. (Notice that, in terms of units, the eV in the denominator cancels with your initial eV value, leaving you with just Joules).