Physics

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  • Physics
    • Atoms
      • Bohr Model
        • Protons (+1), Neutrons (0) located at the centre in nucleus. Electrons (-1) orbit nucleus.
      • Nuclear Decay
        • Beta = high energy electron shot out of decaying nucleus. Charge -1. Aluminium sheet enough to stop it.
        • Alpha = Helium nucleus (2 pro's, 2 neut's). Charge +2. Aluminium sheet enough to stop it
        • Exponential Decay =  decay rate proportional to amount of remaining material.
          • Half life t1/2 such that after each time t1/2, amount of material halves.
      • Radiation
        • change atom composition which changes element or proporties.
    • Electricity
      • Ohm's Law
        • I=V/R
          • I = current. V=Voltage. R=Resitance
    • The Universe
      • Untitled

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