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 ▸Draw and describe the major points of a typical stress-strain graph for a metal.
If a vehicle A, 1000kg moving at 5m/s collides with vehicle B, 750kg, moving in the opposite direction at 8m/s assuming no rebound what is the velocity of the vehicles after collision.
Describe and explain the photoelectric effect in terms of photons interacting with the surface of a metal.
Describe one technique you could use to measure the threshold voltage for LEDs.