Matter And Radiation

Question 1

What makes up a nucleon

Answer 1

Neutron and proton

Question 2

What changes when talking about isotopes

Answer 2

The amount of neutrons decides whether it is an isotope

Question 3

How do you work out the specific charge?

Answer 3

Charge divided by mass

Question 4

Relative charge of a proton

Answer 4

1

Question 5

Relative charge of a neutron

Answer 5

0

Question 6

Relative charge of an electron

Answer 6

-1

Question 7

Relative mass of a proton

Answer 7

1

Question 8

Relative mass of a neutron

Answer 8

1

Question 9

Relative mass of an electron

Answer 9

0.0005

Question 10

Mass of proton

Answer 10

1.67x10 -27

Question 11

Mass of a neutron

Answer 11

1.67x10 -27

Question 12

Mass of an electron

Answer 12

9.11x10 -31

Question 13

What holds the atom together

Answer 13

Strong nuclear force

Question 14

How does the strong nuclear force prevent collisions between particles

Answer 14

Attractive force above 0.5fm repulsive below 0.5fm

Question 15

What is the symbol for alpha radiation

Answer 15

4
Apha
2

Question 16

What is the symbol for beta radiation

Answer 16

0
B
-1

Question 17

What is also emitted during beta decay

Answer 17

An antineutrino

Question 18

What is the equation for wavelength and frequency for light waves

Answer 18

Lambda=C

f

Question 19

Wavelength of visible light

Answer 19

700nm to 400nm

Question 20

Wavelength for infrared

Answer 20

1mm to 700nm

Question 21

Wavelength for ultra violet light

Answer 21

400nm to 1nm

Question 22

In what circumstances are electromagnetic waves produced

Answer 22

By a charged particle when it looses energy

Question 23

How do you work out the energy of a photon?

Answer 23

(Photo energy) E = h x f

Question 24

How do you work out the energy of a laser beam?

Answer 24

Power = nhf

Where n is the number of photons passing a specific point.

Question 25

What happens when a particle meets an antiparticle

Answer 25

The annihilate each other and radiation is released in the form of photons

Question 26

For annihilation what must be true for the particle and antiparticle

Answer 26

exact same rest masses

Exact opposite charge

Question 27

What happens in pair production

Answer 27

Photon emits a particle and its antiparticle

Question 28

Equation for pair production

Answer 28

hfmin =E0

Hfmin is the minimum energy of a photon needed

E0 is the rest energy of the particles

Question 29

What happens in annihilation

Answer 29

A particle collides with its antiparticle emitting two photons

Question 30

Equation for annihilation

Answer 30

hfmin = 2 x E0
Hfmin is the minimum energy of emitted photons
e0 is the rest energy of the particle

Question 31

What do Feynman diagrams do

Answer 31

Illustrate interactions in the electromagnetic force

Question 32

What is governed by the weak nuclear force

Answer 32

Interactions of neutrinos and antineutrinos

Question 33

What is emitted when a neutron and a neutrino interact

Answer 33

Proton, B- (electron) and a W- boson

Question 34

What is emitted when a proton and an antineutrino

Answer 34

Neutron, B+ (positron) and a W+ boson

Question 35

What does a W- boson decay to

Answer 35

B- and an antineutrino

Question 36

What does W+ bosons decay to

Answer 36

B+ and a neutrino

Question 37

Charge of a proton

Answer 37

+1.6x10 -19