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Summary Chapter 1- Particle Physics
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  • Course
  • Physics A-level
  • Institution
  • Bachillerato
  • Book
  • A-Level Physics for AQA

Chapter 1: Particles, physics A(S)-level, aqa Exam Board. The notes include: atomic structure, stable and unstable nuclei, particles and antiparticles, forces and exchange particles, classification of particles and quarks

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  • No
  • Chapter 1
  • January 25, 2023
  • 9
  • 2022/2023
  • Summary

Subjects

  • physics
  • a level
  • as level
  • physics alevel
  • aqa
  • particle physics
  • particles
  • chapter 1 particles
  • section 1 particles

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PARTICLES


YSIHYRELEI-E.ge/sIY#if
Mass



C- 9.1×10-3
'
-1 1.6×10
"
-18^40
M 1.7×10-27 O O 1

P 1
""
1.7×10-27 1.6×10 1-


1




SPECIFIC (HARGE :
CHARGE OF A PARTICLE DIVIDED BY ITS MASS ( CHARGE -

To -
MASSRATIO )
(
( conlombs ) kg)


ó """°
" ""°"
{


[
" " ""
" Newtons


oe
-




O

nucleus 888
0%0 electronico
e-
o


00

Mass ctlarge in C
kg ;
=




RUTHERFORD EXPERIMENT :




1) MOST d- PARTICKS
go through with out
cnanging

trajectory .




> most of the atom is empty Space .




2) A FCW PARTICLES Cttangetrajectory

> * i. *. ".in.ae
;
* .



3) EVEN FEWER PARTICLES
( 10.000 )
, bounce back .




> >
Vlry Small & MASSIVE NUCLEUS .




> -1

>
✗
-
-


PARTICICS
> Detector

{ He

Hét

, SIMPLE MODEL OF THE ATOM

ATOMS :
→
PROTONS + Neutron in Nucleus


→ electrones araend
orbiting

ISOTOPES :
SAMC PROTAES ,
DIFFERENT NEUTRONS




PARTICLE PHYSICS :




the
strong force

NUCLEAR DISTANCES RANGE OF STRONG FORCE :




0.5 3 fm
'°
fm
"
SIZE OF AN ATOM 10 10 >
- -

= -
m -




SIZE OF A NUCLEUS = 10
- "
m
> BELOW O -5 fm :
VERY REPULSIVE FORCE

7 OVER 3 fm :
Force is ZERO



(OULOMB REPULSION Force
l ( LONG RANGE)
/
É
'

,
~ / Separaron
FORCE o |
RED -
-



Strong Force
¥
BETWEEN electrostática repulsión
NUCKONS
( N) ¿É /
|
NUCLEONSEDARATION
( 10 5m)
'



IOFÉ
-




1- Itm ,




µ«⇐¿µµµ[
-




/
STRONG Nuclear Force
( short range)




⑦ ATTRACTIVE

TYPICAL Nuclear separación = 1-3×10 - ''
m




↳ MORE Force
> STRONG ATTRACTIYE Force


=
O
=
104N

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