The size of atomic nucleus is of the order of __________ .

in an atomic nucleus, the nuclear force binds ______________________________ together.

a)neutrons

b)neutrons and protons

c)protons

d)neutrons and protons and electrons

e) electrons

An atomic nucleus at rest decays radioactively into an alpha particle and a smaller nucleus. What will be the speed of this recoiling nucleus if the speed of the alpha particle is 3.8 X10^5 m/s? Assume the recoiling nucleus has a mass 57 times greater than that of the alpa particle.

An atomic nucleus at rest decays radioactively into an alpha particle and a smaller nucleus. What will be the speed of this recoiling nucleus if the speed of the alpha particle is 2.1×10^5 m/s?? Assume the recoiling nucleus has a mass 57 times greater than that of the alpha particle.