Also on the subject of the weak force, it turns out to be horribly difficult to locate easy to understand descriptions of the "force", i.e. mass moving momentum, aspect of the weak force in layman's descriptions. With some real effort you can dig through some of the more techical literature to identify the charged and neutral current components of the electroweak Lagrangian, and with a bit more effort you kind dig up the potential function of the weak force field, which in practice, is a short range force that is approximately equal in strength to the electromagnetic force at 10^-18 m, "but at distances of around 3×10−17 m the weak interaction is 10,000 times weaker than the electromagnetic.", in general, the weak force is stronger at shorter ranges, and weaker at longer ranges. More generally:
Due to their large mass (approximately 90 GeV/c^2) these carrier particles, termed the W and Z bosons, are short-lived: they have a lifetime of under 1×10^−24 seconds. The weak interaction has a coupling constant (an indicator of interaction strength) of between 10^−7 and 10^−6, compared to the strong interaction's coupling constant of about 1; consequently the weak interaction is weak in terms of strength. The weak interaction has a very short range (around 10^−17–10^−16 m). . .
The weak interaction affects all the fermions of the Standard Model, as well as the hypothetical Higgs boson; neutrinos interact through the weak interaction only. The weak interaction does not produce bound states (nor does it involve binding energy) – something that gravity does on an astronomical scale, that the electromagnetic force does at the atomic level, and that the strong nuclear force does inside nuclei.
All told, the weak force has a rather modest impact on the way the universe behaves at the macrolevel.
It isn't clear to me if the lack of weak interaction bound states is a theoretical result, or an absence of empirical evidence, or both.
At the distance scale at which the nuclear binding force (mediated by pions and derivative of the strong force within protons and neutrons) operates, the weak force is a quantitatively negligable component factor, that is much weaker than either the strong force or the electromagentic force.
But, I have yet to see anything really credible that more than hints that the weak force is generally repulsive, and not attractive, based on the amateur authors assumption that it acts in opposition to the generally attractive strong force (although, of course, the strong force switches from a repulsive to an attractive regime with distance) and I don't have enough confidence that I understand the normal numerical values and sign conventions of the terms in the Lagrangian to say with confidence that I fully understand how they play out. It also seems from the neutral current portion of the Lagrangian that local electromagnetic field strength interacts to some extent with neutral current Z boson activity.