What are quarks?
Quarks are the building blocks of protons and neutrons, as found in the nucleus of atoms. They are as far as we know, fundamental particles, but this could change in the future. There are 6 types, named up, down, strange, charm, top and bottom; each having it's own mass, charge and spin.
AG
Related Physics A Level answers
All answers ▸State what is meant by a Doppler shift and describe how it was used to study the movement of galaxies.
A mass, m, is resting on a slope being slowly tilted upwards from horizontal. The static friction co-efficient is 0.3 and the dynamic friction co-efficient is 0.2: at what angle will the mass begin to slip?
Is a photon a wave or a particle??
An alpha particle is accelerated with 5MeV of kinetic energy towards the nucleus of a gold atom with atomic number 79. What is the distance of closest approach that is reached by the alpha particle?