Question

what are the four known forces

Answer 1

Strong and weak nuclear forces, electromagnetism,and gravitational.

Answer 2

electromagnetism, gravitational, strong interaction , weak interaction..... and higgs bosson ( newly born under working)

Answer 3

electromagnetism- travels as waves(with both a magnetic and electric component) and particles(photon)

gravity- acts between all bodies of mass and has an infinite range yet is about 10^33 times weaker than the electric force when measured at the atomic level.

weak force- it is responsible for the radioactive decay of particles

strong force- it holds the constituants of the atoms together e.g protons and neutrons, quarks and gluons, pretty much the glue in an atom to hold it together