Suppose that 60 neutrons and 40 protons go into a nuclear reaction and 59 neutrons and 41 protons come out of it. Is the baryon number B conserved in this case? Suppose that masses of the proton and...

Suppose that 60 neutrons and 40 protons go into a nuclear reaction and 59 neutrons and 41 protons come out of it. Is the baryon number B conserved in this case?

Suppose that masses of the proton and the neutron are given by the symbol m and that the radius R of a nucleus is also known. Write an expression for the average density ρ of the nucleus.