Nuclear and Particle Physics |

The three sub-atomic particles found in the atom are _________________, _______________ and __________________

proton, neutron and electron

Protons and neutrons are found in the _____________ and electrons are found in the _______________

nucleus, outer shells

Relative mass of proton

1

Relative mass of neutron

1

Relative mass of electron

1/1836

Mass of proton (kg)

1.6 x 10-^27 kg

Mass of neutron (kg)

1.6x10-^27 kg

Mass of electron (kg)

9.11x10^-31 kg

Charge of proton (Coulombs)

1.6 x 10(^-19) C

Charge of electron (Coulombs)

-1.6 x 10(^-19) C

Width of nucleus

10(^-14) m

Width of an atom

10(^-10) m

____________ forces keep the electrons in orbit around the nucleus

Electrostatic

The proton number is the number of ________ in the nucleus

protons

The nucleon number is the total number of __________ ____ ________ in the nucleus

protons and neutrons

Isotopes are atoms of the same _________ number but with different ________ numbers

proton, nucleon

The strong nuclear force is the force which holds _________ and ________ together inside the nucleus. It has to be strong enough to counteract the repulsion amongst the ________

protons, neutrons, protons

Which of the three sub-atomic particles does the strong nuclear force not act on?

Electrons

The strong nuclear force acts equally on all ________

Hadrons

The range of the strong nuclear force is about ________________

3 x 10(^-15)m

Below 1 fm the strong nuclear force is __________

repulsive

Between 1 fm and 3fm the strong nuclear force is ________

attractive

Nuclear and Particle Physics

Nuclear and Particle Physics (Topic 8)

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