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If you take two protons, they have a mass of about $3.34\times10^{-27}$ kg. The "Schwarzschild radius" of a two-proton black hole is given by $2GM/c^2 = 5 \times 10^{-54}$ m ! i.e. you have to get the protons closer together than this. Even ignoring that protons have a radius of $10^{-15}$ m and that there would be an enormous repulsive strong nuclear force ...


When current flows in a circle, we can use the right hand rule to find that the magnetic field points in one direction inside the loop, and in the other direction outside the loop (to be precise, the magnetic field lines wrap around the wire, as shown in the second diagram below). Thus, in the case of current carrying loops, if we curl the fingers of our ...


Theoretically, yes. Practically, no. In order to create a singularity you would have to compress mass so that it would have zero volume, and thus an indeterminate density. We simply do not have the capabilities to produce such results on our own. Edit: Density would approach infinity as the volume approaches zero.


This is a hypothetical question, since electrons are elementary particles and protons are composite. The solutions of the potential problem would give stable orbitals with smaller average radii. Here is a Bohr model solution for the muonic hydrogen, where the muon is 200 times heavier than the elecron. The energies become KeV instead of eV. To go to the ...


"Free" electrons and protons can combine to form neutrons (and electron neutrinos) through weak interactions. The process would usually be energetically unfavoured in low density situations because the rest mass of the neutron is about 1.29MeV higher than the combined rest mass energies of the proton and electron. This reaction, between free protons and ...


Yes, they can be. The production of neutrons by deep inelastic scattering of electrons on protons was studied in HERA experiments in the 90's. No neutrino needed, at least not as one of the colliding particles. Here are some links: Deep-Inelastic Electroproduction of Neutrons in the Proton Fragmentation Region Measurement of Leading Proton and Neutron ...


In electron capture an inner atomic electron and a proton will together form a neutron and an electron neutrino, I'm not sure if that's what you're looking for however. Source: Young and Freedman Physics textbook Electron Capture Wikipedia article`


Since a neutron decays into a proton, electron and an electron anit-neutrino you will need to get all three together at the same time. Good luck on that one!

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