ASTRON 100 Lecture Notes - Lecture 4: Baryon, Atomic Number, Photon
7 Sep 2016
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10. gravitational pe (perched on a cliff: all objects with mass attract each other due to their gravitational force, pe = mgh, m = mass, g = constant (9. 8 m/s^2, h = object"s height. Why: you"re burning fuel to heat the house at the same time, you"re just converting energy from one form to another. 12. nuclear pe (stored in nuclear bonds: mechanical pe (like a compressed spring) 14. electromagnetic pe (when you hold two magnets close to each other) Can"t be destroyed, can"t be created, can only be transformed from one form to another. Comets that are orbiting the sun move ___ when they are closer to the sun than when they are further away. Atoms: made of electrons, protons and neutrons. Two binding forces: attractive coulomb (electrical) force between positively charged nucleus and negatively charged electrons, strong nuclear force holds the protons and neutrons in the nucleus, mostly empty space. Electrons can only have specific amounts of energy.
