Please describe the structure of the atom. How is the atom related to protons, neutrons and electrons?

Si una estrella no tiene paralaje medible, ¿qué puedes inferir?

What is an example of a physical property?

Which of the following observations indicates that there is a small, dense, positively charged part in the center of an atom? some uncharged particles are scattered by a gold foil. all uncharged particles are attracted towards a gold foil. all positively charged particles pass straight through a gold foil. some positively charged particles bounce back from a gold foil.