The strong nuclear force is indeed stronger than the weak nuclear force at distances less than 10^-18 meters, where the strong interaction remains dominant. At approximately 0.7 femtometers (fm), the strong force becomes repulsive, but it continues to outpace the weak force at shorter distances. Current understanding suggests that all fundamental forces, including strong, weak, and electromagnetic interactions, converge in strength at extremely high energy levels, a phenomenon known as Grand Unification.
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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 said:So if two quarks got to a distance of <<10^-18 m