Particles

Question 1

What is the formula for specific charge?

Answer 1

Question 2

What is the charge and the mass of a proton neutron and electron?

Answer 2

Question 3

What are some examples of nuclear equations?

Answer 3

Question 4

How is beta decay different from alpha decay?

Answer 4

As alpha decay leaves even tracts, while beta decay leaves whispy tracts which is due to beta decay releasing an electron and an antineutrino from the nucleus

Question 5

How does the Strong Nuclear Force work?

Answer 5

At around 0.4fm. the strong nuclear force is the most repulsive to stop nucleons overlapping. At around 0.9fm. the force is at its most attractive to keep nucleons together. Just before 3.0fm., the strong nuclear force becomes ineffective and therefore regarded as a short range interaction.

Question 6

What is the elctrostatic force?

Answer 6

This is a force only between protons in the nucleus. The force is always repulsive at any distance as it never drops to zero.

Question 7

What is the formula for the speed of light?

Answer 7

Question 8

What is formula for the energy of a photon?

Answer 8

Question 9

What is the formula for the power of a lazar?

Answer 9

P(js*-1)= Number of photons(s*-1) h(js) f(hertz)

Question 10

What is annihilation and pair production?

Answer 10

Annihilation- This is where an antiparticle and a particle collide and produce two photos of equal energy and momentum

-charge,mass,enrgy and momentum

Pair production- This is where a high energy photons interact with a body(nucleus) as splits into a particle and its anti-particle

Question 11

What are the similarities differences between particles and antiparticles?

Answer 11

• same mass and energy
• opposite charge

Question 12

What is the conversion factor from Mev to joules?

Answer 12

1.6 times 10*-13

Question 13

What is the rest mass energy of an electron?

Answer 13

0.510999 Mev

Question 14

What is the general classifiction of particles?

Answer 14

Question 15

What are the characteristics of Leptons and what are some types of particles?

Answer 15

• Light
• fundemental
• does not interact with the SNF
• interacts with WNF and electrostatic force(if charged)
• elctrons, Muons, elctron neutrinos,muon neutrinos

Question 16

What are the characteristics of Hadrons?

Answer 16

• heavy
• not fundemental
• made from quarks

interacr via SNF,WNF and elctorstatic force(if charged)

Question 17

What are the two sub-groups in hadrons?

Answer 17

Baryons

• structure of three quarksor anti- quarks
• particles include protons and neutrons

Mesons- structure of a quark and an antiquark

-pions and kiaons

Question 18

What are three types of quarks?

Answer 18

• an up quark
• a down quark
• a strange quark

Question 19

What is the structure to help identify the quark structure of Mesons?

Answer 19

Question 20

What are th conservation laws?

Answer 20

• used to check if interactions can occur
• all quantum values need to be conserved

Baryon number

Lepton number

charge

Question 21

How does strangness conservation work?

Answer 21

• strangness will be conserved where interactions with the SNF is important
• whe making baryons or mesons
• will not be conserved interactions of SNF is not important

Question 22

What is the standard model?

Answer 22

Question 23

What are some unstable particles?

Answer 23

• free neutrons which decays in 885.7 seconds
• M- is also unstable

Question 24

What are feyman diagrams

Answer 24