Physics 2

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  • Physics 2
    • The 9 Types of Energy: Heat, Kinetic, Nuclear, Sound, Light, Chemical, Electrical, Gravitational potential & Elastic potential
    • Conservation of Energy- The total energy after a change is the same as the total energy before the change- ENERGY CANNOT BE CREATED OR DESTROYED
    • Efficiency- The percentage of useful energy coming from a source
    • Power= Current x Voltage, Unit of power is the Watt (W) or kilowatt (kW)
    • E= Energy (in joules), P= Power (in watts) & T= Time (in seconds)
      • Power= Current x Voltage, Unit of power is the Watt (W) or kilowatt (kW)
    • Step-up transformers increase voltage whilst, step-down transformers decrease the voltage
    • Fuels can be burned to release light and heat energy
      • Renewable means unlimited, not running out
        • Non-renewable means limited, will eventually run out
          • Fuels can be burned to release light and heat energy
            • Renewable means unlimited, not running out
              • Non-renewable means limited, will eventually run out
                • Non-renewable: Fossil fuels, Nuclear fission fuels
              • Renewable: Geothermal, Wind (convection currents), Water (dams, tidal, Wave, Solar & Biomass
          • Non-renewable: Fossil fuels, Nuclear fission fuels
        • Renewable: Geothermal, Wind (convection currents), Water (dams, tidal, Wave, Solar & Biomass
    • Wind & Water Powers: Wind Power, Tidal Power, Wave Power & Hydro-electric Power

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