Which of these is the part of an atom that contains the protons and neutrons?
electron
orbital
nucleus
shell

What problem would a person have if the nucleic acid in one of his or her cells were damaged?

Asample of radium-226 will decay 1/4 of its original amount after 3200years. what is the half-life of radium-226?

Movement that is like a t a type of wave that transfers energy where the particles in the medium move in a circle motion while the energy travels left or right. a type of wave that transfers energy where the particles in the medium move perpendicular to the direction in which the energy is traveling. transfers energy from one location to another a type of wave that transfers energy where the particles in the medium move parallel to the direction in which the energy is traveling. movement that is back and forth, like an equal sign = 1. wave 2. parallel movement 3. perpendicular movement 4. transverse wave 5. longitudinal wave 6. surface wave