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Anki flashcards on Physics AQA Unit 2: Particles and radiation
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pre-made Anki flashcards on all content for AS level on Physics AQA Unit 2: Particles and radiation
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Physics::Paper 1::Unit 2: Particles and Radiation::2.1: Particles specific
charge <ul><li>\(specific~charge=\frac{charge}{mass}\)</li><li>'specific' =
per unit mass</li></ul>
Physics::Paper 1::Unit 2: Particles and Radiation::2.1: Particles hadrons
<ul><li>made of quarks</li><li>only particle to feel nuclear
force</li><li>includes baryons and mesons</li></ul>
Physics::Paper 1::Unit 2: Particles and Radiation::2.1: Particles baryons
<ul><li>baryons have \(qqq\) format<br>anti-baryons have \(\
bar q\bar q\bar q\) format</li><li>baryon number \((B)\)<br>- only
baryons have \(B\), all others have \(B\) of zero</li><li>includes
protons (only stable baryon) and neutrons</li></ul>
Physics::Paper 1::Unit 2: Particles and Radiation::2.1: Particles mesons
<ul><li>\(q\bar q\) format<br></li><li>includes pions and
kaons</li><li>kaons have either up/down quark and a strange quark</li></ul>
Physics::Paper 1::Unit 2: Particles and Radiation::2.1: Particles leptons
<ul><li>fundamental (no set structure)</li><li>interact via electromagnetic
and gravitational forces</li><li>lepton number \(L\) (same as \(B\),
just for leptons)</li><li>includes electrons, muons, neutrinos</li></ul>
Physics::Paper 1::Unit 2: Particles and Radiation::2.1: Particles
electrons \((e^-)\) <ul><li>anti-electron AKA positron \
((e^+)\)</li><li>\(L=+1\)<br>\(Q=-1\)<br></li></ul>
Physics::Paper 1::Unit 2: Particles and Radiation::2.1: Particles muons \
((\mu^-)\) <ul><li>anti-muon \((\mu^+)\)</li><li>\(L=+1\)<br>\(Q=-1\)<br></
li></ul>
Physics::Paper 1::Unit 2: Particles and Radiation::2.1: Particles
neutrinos \((\nu)\) <ul><li>anti-neutrino \((\bar{\
nu})\)<br>electron neutrino \((\nu_e)\), muon
neutrino \((\nu_{\mu})\)</li><li>\(L=+1\)<br>\(Q=0\)<br>negligible
mass</li><li>most abundant in universe</li></ul>
Physics::Paper 1::Unit 2: Particles and Radiation::2.1: Particles pair
production <ul><li>where proton is converted equally into matter and
antimatter</li><li>can only occur when energy of photon is greater than total rest
energy</li><li>excess energy converted into \(E_k\) of
particles</li></ul>
Physics::Paper 1::Unit 2: Particles and Radiation::2.1: Particles annihilation
<ul><li>where a particle and its corresponding antiparticle
collide</li><li>masses converted into energy which is released in form of
photons</li><li>2 photons move in opposite directions to conserve
momentum</li></ul>
Physics::Paper 1::Unit 2: Particles and Radiation::2.1: Particles \(\
beta^-\) decay \(n \rightarrow p+\beta^-+\bar{\nu_e}\)<br>\(\beta^-
=e^-\)
Physics::Paper 1::Unit 2: Particles and Radiation::2.1: Particles \(\
beta^+\) decay \(p \rightarrow n+\beta^++\bar{\nu_e}\)<br>\(\
beta^+=e^+\)
Physics::Paper 1::Unit 2: Particles and Radiation::2.2: Electromagnetic radiation
and quantum phenomena emission spectra wavelengths of photons given off by
element as it decays down energy levels
Physics::Paper 1::Unit 2: Particles and Radiation::2.2: Electromagnetic radiation
and quantum phenomena absorption spectra certain frequencies of colour
missing due to being absorbed by element
Physics::Paper 1::Unit 2: Particles and Radiation::2.2: Electromagnetic radiation
and quantum phenomena link between emission and absorption spectra frequencies
absorbed by electrons going up energy levels are the same as the frequencies
emitted by photons going down to ground state
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