p1 particles Flashcards

(46 cards)

1
Q

what is specific charge and how do you calculate it

A

charge per unit mass

charge of particle / mass of particle

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2
Q

what is the strong force

A

the force that holds together protons

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3
Q

how does the nuclear strong force work

A

less than 0.5 fm the strong force is repulsive

between 0.5 fm and 3 fm the strong force is stronger than the electromagnetic force so it pulls them together

after 3fm the electrostatic attraction is stronger than the string force so it pulls them apart

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4
Q

how do you convert joules to ev
ev to joules

A

j to ev = / 1.6x10^-19
ev to j = x 1.6x10^-19

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5
Q

how can radiation be split up

A

into discrete packets called photons

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6
Q

what do photons contain

A

an amount of energy that is related to the frequency of light

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7
Q

what does wave speed =

A

wavelength x frequency

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8
Q

name 2 equations that energy is = to

A

planks constant(6.63x10^-34) x frequency

h(planks constant)c(speed of light)/wavelength

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9
Q

what is antimatter

A

the same element with the same properties but a different charge

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10
Q

what happens when antimatter and matter collide

A

they annihilate each other and leave energy

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11
Q

how do you calculate the energy from two antimatter colliding

A

energy = mass x speed of light^2

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12
Q

whats the equation for beta positive

A

proton -> neutron + electron+ + electron neutrino

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13
Q

whats the equation for electron capture

A

proton + electron -> neutron + electron neutrino

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14
Q

what are the 4 fundemental interatrations (forces)

A

gravity, weak force, electromagnetic and strong force

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15
Q

name the 3 subatomic particles

A

hadrons,leptons and bosons

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16
Q

what are hadrons

A

particles that feel the strong nuclear force

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17
Q

name the two classes of hadrons

A

baryons,antibaryons and mesons

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18
Q

what are baryons and are they conserved

A

they are protons and neutrons(anti)
they are conserved

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19
Q

what are baryons made up of and
antibaryons

A

3 quarks
3 antiquarks

20
Q

name the quarks of protons

A

two ups and one down

21
Q

name the quarks of neurtons

A

two down and on up

22
Q

what are quarks

A

fundamental particle that are the building blocks of matter and subatomic particles

23
Q

name the order of quarks in mass

A

up charm top

down strange bottom

24
Q

name the two types of mesos

25
what are mesons made up of
quark + antiquark
26
what are pions made up of
one up and one down
27
what are kaons made up of
up or down + strange
28
what is strange and is it conserved
a property of kaons and is normally conserved
29
whats the charge of a strange quark
-1
30
what are strange quarks made up of and how are they made?
always made up of one stange and antistrange quark made by the strong nuclear force
31
how does strangeness decay
by the weak force by +1,0,-1
32
what happens when strangeness decays
they are not conserved
33
what is the weak force
changes the type of quark
34
what do kaons decay into and how
pions weak force
35
name the mass order of leptons
electon neutrino muon neutrino tau neutrino electron muon tau
36
what do muons decay into
an electron
37
what does tau decay into
quarks
38
What’s a n exchange particle
Changes the charge of a particle
39
What’s the range relative strength and exchange particle of gravity What does it act between aswell
No range Strength: 1x10^-34 Exchange : graviton All objects with mass
40
What’s the range relative strength and exchange particle of the strong force What does it act between aswell
1x10^-15 Strength: 1x10^3 Pions Quarks
41
What’s the range relative strength and exchange particle of electromagnetic What does it act between aswell
No limit Strength 1 Exchange virtual photon Between charged objects
42
What’s the range relative strength and exchange particle of weak force What does it act between aswell
1x10^-18 Strength 1x10^-10 Exchange bosons Fundamental particles
43
Marriage was is only conserved in
Strong force
44
What is the role of pions
Found between quarks and help bind quarks together
45
What’s Higgs field
When particles with mass enter the higgs field it causes them to slow down
46
How are virtual photons formed
While electrons are being transferred between cells Annihilation of matter and antimatter