Unit 13: Particle Physics Four fundamental interactions in nature 1.Strong – responsible for binding neutrons and protons into nuclei 2.Electromagnetic.

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Unit 13: Particle Physics Four fundamental interactions in nature 1.Strong – responsible for binding neutrons and protons into nuclei 2.Electromagnetic -- about times the strength of the strong interaction and is responsible for the attraction of unlike charges and repulsion of like charges

Unit 13: Particle Physics Four fundamental interactions in nature 3.Weak – short range with strength of times that of strong interaction 4.Gravitational – holds planets, stars and galaxies together. The weakest of the four fundamental forces.

Unit 13: Particle Physics Four fundamental interactions in nature ◦ Fh3HYaY

Unit 13: Particle Physics Fundamental particles ◦ fundamental-particles/?rq=quarks fundamental-particles/?rq=quarks

Unit 13: Particle Physics The standard model ◦ sGRvoA sGRvoA ◦ h7uPyw h7uPyw