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 ▸Describe an experiment, using a pendulum, which can be conducted to investigate g, acceleration due to gravity.
What is "half-life"?
Asteroid of mass 10^16 kg is travelling in the equatorial plane of Earth. It hits the surface at 45°. After the impact the day shortens by 1% (15 mins). How fast was the asteroid - comment? Neglect effects of atmosphere. Consider only inelastic collision.
What is a potential divider?