D = ? v = 100 ml. m = 1500 g

The atomic nucleus made up from protons (yellow) and neutrons (blue) and held together by nuclear forces. nuclear forces (also known as nuclear interactions or strong forces) are the forces that act between two or more nucleons. they bind protons and neutrons (“nucleons”) into atomic

Ahigh energy (high speed) particle (alpha or beta or neutron) are shot at the target;