PHYS 1023 Study Guide - Midterm Guide: Plutonium, Fluorine, Negative Feedback

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Document Summary

Chapter 14 the nucleus and radioactivity: a new force. It hold the nucleus together, act between nuclear particles (protons and neutrons), and is strongly attractive at separations of around and negligible at larger distances. The quanta (or exchange particles) of the strong force field are gluons. The quanta of the strong matter field are in the up quark (u) and the down quark (d). In addition, there are two more strong matter fields corresponding to a second and third generation of particles: the c-quark and s-quark, and the t-quark and b-quark. Only the first generation is stable and contributes to ordinary matter: protons are made of u-u-d, and neutrons are made of u- d-d. The other two generations are unstable and transmute quickly into other particles. Quarks are not found in isolation because any attempt to isolate them creates more quarks. Weak force: one of the four fundamental forces; a nuclear force that plays a role in radioactive beta decay.