Why can the mass of a multi-particle system be greater than or less than the sum of the masses of individual particles in that multi-particle system?
59594
Binding energy and mass
65831
Understanding type of force interaction in particle decays
34280
Why does the quarks binding energy add mass to nucleons instead of reducing it?
53434
Units in gravitational $N$ body simulations
35650
Number theory in Physics
98902
How can particles be emitted from particles?
100098
Chemical potential of particles with zero mass
81480
What is wrong with this deduction to show that within a multiplet different state has different square angular momentum?
74367
Newtonian mechanics: massless particles
43141
Why is the relationship between atomic number and density not linear?
12433
How do $\pi^0$ particles exist?
66524
The Impossibility ( or Possibility) of Solving $N$-Body Problem
87354
Is there a reason why the spin of particles is integer or half integer instead of, say, even and odd?
55680
The relationship of ${\frak m+m=m}$ to AC
90836
Why do quantum effects dominates when the thermal de Broglie wavelength is on the order of or larger than the interparticle distance?
18023
The direct sum $\oplus$ versus the cartesian product $\times$
100638
Why isn't the entropy of gas infinite if there are infinite microstates available?