Hopefully not jumping the gun here, but in the first 3 min we have worked out the gravitational and Coulomb forces in a nucleus.
With actual numbers and units given so the answers are ... not imaginary "zillions and zillions" but the real thing, which sadly, is very rare out there.
https://www.youtube.com/watch?v=qmBa50x9x9o
I might be back after watching the rest. It's 49 min long...but I didn't want to lose this one.