PHYS 1010Q Lecture Notes - Lecture 37: Strong Interaction, Unified Atomic Mass Unit, Lead

• School: UConn
• Department: Physics
• Course: PHYS 1010Q
• Professor: Barrett Wells

Document Summary

Phys-1010q - lecture 37 - the nucleus (chapter 25) Same seat assignments as exam 2 and exam 3. Plan for a review thursday, december 14th at 10:00 am. Look for an announcement to confirm and for room number. Please fill out student evaluation of teaching form. Scales with the # of protons and neutrons. The mass of a proton and neutron are about the same mnucleon mnucleon. Isotope refers to an atom with a certain number of neutrons. Over 99% of the uranium atoms on earth are the isotope 238 u which is stable fissionable uranium is 235 u , which makes up only about 0. 7% of the earth"s uranium. High energy particles from a decaying atom. Report thickness that will absorb 50% of the particles. Gamma rays through lead (pb), fall by 50% every 2 cm. X = 0cm ; # of = 12. X = 2cm ; # of = 6.