Name the four fundamental interactions.

Which interaction acts on electric charge?

Which interaction is mainly responsible for binding quarks inside hadrons?

Name the exchange particle for the electromagnetic interaction.

Name the exchange particles for the weak interaction.

Why is the weak interaction short range?

Which interaction is responsible for beta decay?

Why is gravity usually negligible in particle-collision calculations?

State a range estimate relating exchange-particle mass to interaction range.

Explain why the photon leads to a long-range electromagnetic interaction.

Classify the interaction in \(n\to p+e^-+\bar\nu_e\).

Why do strong interactions not appear as a familiar inverse-square force between everyday objects?

What is meant by an exchange particle?

Explain why neutrino interactions are difficult to detect.

A process changes quark flavour. Which interaction must be involved?

Use charge conservation to check \(n\to p+e^-+\bar\nu_e\).

Why does a massive exchange particle imply an energy cost for a short-lived virtual process?

Compare electromagnetic and weak interactions for charged leptons.

Why can a neutron decay weakly even though it is electrically neutral?

Explain why interaction type cannot always be identified from charge alone.