Physics P1

Created by: NiravMajithia
Created on: 10-12-16 16:04

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Physics Core
- Energy (J)
  - 10 forms
    - Infrared Radiation
      - 5 properties
  - Infrared Radiation
    - 5 properties
- States
  - Kinetic Theory
  - Solid
  - Liquid
  - Gas
- Transfer by heating
  - Conduction
    - Solids
    - Thermal Insulator
      - Free electrons
        Metals
    - Thermal Conductor
      - Free electrons
        Metals
  - Convection
    - Fluids
    - Convection Currents
  - Evaporation
    - Condensation
      - Gas -> Liquid
      - Low energy condense
      - Rates
        Flow of air
        
        Heat (energy)
        
        Surface Area
    - Liquid -> Gas
    - High energy evaporate
    - Rates
      - Flow of air
      - Heat (energy)
      - Surface Area
  - Condensation
    - Gas -> Liquid
    - Low energy condense
  - Rate of transfer
    - Warm -> Cool
    - Temp difference
    - SA : Volume
    - material made of
    - Material in contact with
- Heating & Insulation
  - U - Value
    - Low value = good insulator
  - Specific Heat Capacity
    - 1kg ^ 1 *c
    - examples
  - Solar panels
    - water heated by sun radiation
      - Heats house
  - Payback time
    - Cost/Saving per year
  - Efficiency
    - Law of conservation of energy
    - Useful & Wasted energy
      - Sankey diagram
    - (Useful out / Total in) x100
- Electricity
  - Transfer
    - kWh
  - Generating
    - Steam -> turbine -> generator
      - Fossil Fuel
        Non - renewable
        Carbon Capture
      - Nuclear
        Non - renewable
        Carbon Capture
        
        Large amount of electricity/kg of fuel
        
        decommissioning
        
        radioactive waste
      - Biofuel
        Carbon Neutral
      - geothermal
    - Water/Wind -> turbine -> generator
    - Sun -> solar CELL -> electricity
      - Solar thermal tower
  - National Grid
    - Label NG
    - Transformers
      - Step-up
        + voltage,- current = - energy loss
      - Step-down
    - Supply + demand
      - Start-up time
        Gas
- Wave Properties
  - Transverse
    - EM waves
      - Vacuum
      - Communication
        Radiowaves
        
        Microwaves
        
        Infrared
        
        Visible Light
    - Oscillations
      - Longitudinal
        Sound waves
        ^ Hz = ^ Pitch
        
        ^ Amplitude = ^ Volume
        
        needs medium
    - Freqency
    - Wavelength
    - Amplitude
  - Longitudinal
    - Sound waves
      - ^ Hz = ^ Pitch
      - ^ Amplitude = ^ Volume
      - needs medium
  - Reflection
    - Law of reflection
    - Normal
    - Laterally Inverted image
  - Refraction
    - Density
      - More dense = towards normal
    - none if along normal
  - Diffraction
    - wavelength > gap = more
    - Wavelength < gap = little/none
    - Wavelength = gap = most
- Dopper Effect
  - Moving wave source
    - light, sound microwaves
  - Source away = ^ wavelength and - frequency
  - Source towards = - wavelength and ^ frequency
- Red Shift
  - Proves galaxies moving away
    - Further = faster & bigger observed ^ wavelength
- Big Bang Theory
  - Began small / dense / hot -> explosion -> universe
  - Evidence
    - CMBR - EM radiation - heat
      - Only explanation is BBT
    - Red Shift
      - Universe expanding outwards

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Physics P1

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