3. Fundamental Forces Flashcards
Name the four fundamental forces
Gravitational
Electromagnetic force
Strong nuclear force
Weak nuclear force
Range of gravitational force
Infinite
Things that experience gravitational force
All particles (mainly effects large objects (planets))
However doesn’t cause particle interaction
Strength of gravitational force
Very weak apart from in context with large objects like planets and stars
What things experience electromagnetic forces
All charged particles
Range of electromagnetic forces
Infinite
What is the Em force also experienced by?
Neutral hadrons as they are composed of quarks
What particles experience the strong force?
All quarks so Baryons
Range of strong force
Short
What is effected by the weak force
All leptons and quarks
Range of weak force
Very short
How to tell if its a strong force
There will NOT be a change in quark flavour will typically involve collisions between particles
only involves hadrons
How to tell if a weak force
There may be a change in quark flavour and neutrinos will be involved
How to tell if Em force
The particles must be charged
NO change in quark flavour
Photons may be emitted