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Physics Paper 1 (Energy (Work Done: (Equation, Definition, Specification,…
Physics Paper 1
Energy
Work Done:
Equation
Definition
Specification
Example of exam question
KE, GPE and EPE
Kinetic Energy
Equation
Definition
Units
Elastic Potential energy
Units
Equation
Definition
Gravitational Potential Energy
Units
Equation
Definition
Specific Heat Capacity
Definition
Practical
Method
Conclusion
Equation
Power
Equation
Units
Conservation of Energy
Specification
Efficiency
Energy Resources
Uses
Environment
Electricity
Current
Equation
expalnation
circuits how it changes current
Voltage
Equation
Practical 3: Circuits
Method
conclusion
Practical 4: Circuits
Method
conclusion
Thermistors and LDR
DC and AC
Topic 3: Particle Model of Matter
Density
Density (kg/m^3)=Mass (kg) / Volume (m^3)
Density is a measure of 'compactness' of a substance.
Density tells you how much mass is packed into a given volume of space. A dense material has its particles packed tightly together.
To find the
density of a Solid
Object:
Find the volume by either: using the formula wigth x height x length or for a trickier shape by submerging it in a eureka filled with water. The water displaced by the object will be transferred to the measuring cylinder. Record the volume of water in the measuring cylinder. This is the volume of the object. Use the equation to find the density.
To find the
density of a liquid
:
Place a measuring cylinder on a balance and zero the balance.
Pour 10 ml of the liquid into the measuring cylinder and record the liquid's mass.
Pour another 10 ml into the measuring cylinder and record the total volume and mass. Repeat the process until the measuring cylinder is full.
For each measurement, use the formula to find the density.
Take an average of your calculated densities.
Internal Energy and Changes of State
Internal energy is stored by the Particles that make up a system.
The internal energy of a system is the total energy that its particles have in their kinetic and potential energy stores.
Particle Model
Gases
almost no forces of attraction between particles
more energy than solids
travel in random directions at high speed as have no fixed positions
low density
Liquids
weaker forces between particles
particles close together but move past each other
more energy than solids
less dense than solids
Solids
strong forces of attraction between particles
generally higher density than other states
less energy because less room to vibrate as fixed positions
The higher the Kinetic energy, the faster the particles move.
Atomic Structure
