Physics : Paper 1

Physics : Paper 1

1. Equations

   • Weight = Mass x Gravitational Field Strength
   • Work done = force x distance
   • Force applied to a spring = spring constant x extension
   • Moment = force x distance
   • Pressure = force to a normal surface/ area of that surface
   • Distance Travelled = speed x time
   • Acceleration = Change in velocity / time taken
   • Resultant force = mass x acceleration
   • Kinetic Energy = 0.5 x Mass X Speed {Squared}
   • Gravitaitional Potential Energy = mass x gravitational field strenght x height
   • Power = Energy transferred / time
   • Power = work done / time
   • Efficiency = useful output energy transfer / total input energy transfer
   • Efficiency = useful power output/ total power output
   • Wave speed = frequency x wavelength
   • Charge flow = current x time
   • Potential diffrence = current x resistance
   • Power = potential difference x current
   • Power = current {SQUARED} x Resistance
   • Energy Transferred = power x time
   • Energy Transferred = charge flow x potential diffrence
   • Density = Mass / Volume

2. Energy Stores

   • Chemical
     • Stored in Chemical bonds
   • Elastic
     • Stored in a rubber band or a spring
   • Thermal
   • Nuclear
     • Makes Radioactivity
   • Gravitational Potentail
     • The higher an object is and the more it weighs the more GpE the object will have
   • Electrostatic
   • ENERGY CANNOT BE CREATED NOR DESTROYED

3. Atomic Structure

   • Solid
     • All particles are in a Linear pattern and particles vibrate against each other.
     • To go from a Solid to a Liquid it must be melted.
   • Liquid
     • A liquid has no pattern and all particles are free to flow
     • To go from liquid to solid it must be frozen
     • To go from liquid to gas it must be boiled and vaporised
   • Gas
     • Particles are spread thin throughout an area
     • To go from a gas to a liquid it must be condensed

4. Energy Sources

   • Non-Renewable
     • Coal
     • Gas
     • Oil
     • Nuclear
     • Non Renewable are tried and tested methods that have proven results however they are a major contrubutor to climate change as they release alot of Green Houses Gasses. However energy companies are trying to innovate and make these methods cleaner and more efficent
   • Renewable
     • Wind
     • Solar
     • Hydro
     • Tidal
     • Non Renewable energy sources are the next big thing with many inovations making them more efficent and produce more energy, however these energy sources rely on environmental circuimstances.

5. Forces : Contact and Non Contact

   • Contact
     • Air Resistance
     • Friction
   • Non Contact
     • Gravitational
     • Magnetic
     • Electro Magnetic
     • Electrostatic