Is the strong nuclear force stronger than the weak force?

[Hami Hashmi]

I've heard that the weak nuclear force is stronger than the electromagnetic force at distances of 10^-18 m. I've also heard that the strong force becomes repulsive at a distance of 0.7 fm. So if two quarks got to a distance of <<10^-18 m which force would win, the strong force or the weak force?

 

[mfb]

So if two quarks got to a distance of <<10^-18 m

At this length scale the position of quarks is not a very well-defined concept any more. You can still talk about the energy scale, however. The strong interaction stays stronger up to energies way beyond the reach of current experiments. It is expected that the strong, weak and electromagnetic interaction all get the same strength for some extremely high energy, and behave like a single interaction beyond that. This concept is called Grand Unification.

 

[Hami Hashmi]

Ok thanks