3262316
Description
Mind Map by Alfonzzzo R, updated more than 1 year ago
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Created by Alfonzzzo R
over 9 years ago
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Electricity
and Forces
- Generation
- Fuels
- Renewable
- Solar
- Wind
- Biomass
- Geothermal
- Hydroelectric
- Tidal
- Wave
- Solar
- Finite
- Fossil Fuels
- Burning ... causes water to boil and produce steam.
- The steam drives a turbine, which
is connected to a generator.
- This makes electricity.
- This makes electricity.
- The steam drives a turbine, which
is connected to a generator.
- Coal
- Coal is the slowest process.
- Coal is the slowest process.
- Oil
- Gas
- Gas is the fastest process.
- Gas is the fastest process.
- Fossil fuels are finite and the burning produces carbon dioxide.
- Carbon dioxide is a greenhouse gas
so traps heat in the atmosphere.
- Carbon dioxide is a greenhouse gas
so traps heat in the atmosphere.
- Burning ... causes water to boil and produce steam.
- Fossil Fuels
- Renewable
- Fuels
- The Mains (Electricity)
- 230 Volts
- 50 Hz frequency.
- Alternating current.
- The National Grid
- A Network of power stations
and pylons that distribute
electricity across the country.
- The step-up transformer increases
the voltage, so lowers the current.
- This means that less energy is lost as heat.
- This means that less energy is lost as heat.
- The step-down transformer lowers
the voltage, so raises the current.
- This means that the electricity is
back to a safe amd uasble level.
- The current is the
same at both ends.
- This means that the electricity is
back to a safe amd uasble level.
- 230 Volts
- Equations
- Power = Current x Voltage
- Watts (W) = Ampere (A) x Volts (V)
- Watts (W) = Ampere (A) x Volts (V)
- Newton's Second Law
- Force = Mass x Acceleration
- F = MA
- Newtons (N) = kg x (m/sec)squared
- F = MA
- Force = Mass x Acceleration
- Momentum = Mass x Velocity
- P = MV
- kgm/sec = kg x m/sec
- P = MV
- Principle of Conservation of Momentum
- MaVa + MbVb = MaVa + MbVb
- The direction matters so have
positive one way and negative
the other.
- A negative answer means
that the arrow is wrong.
- A negative answer means
that the arrow is wrong.
- The direction matters so have
positive one way and negative
the other.
- MaVa + MbVb = MaVa + MbVb
- Kinetic Energy = 1/2 x Mass x (Speed)squared
- Ek = 1/2 x M x (V)squared
- J = 1/2 x kg x m/sec
- Ek = 1/2 x M x (V)squared
- Force = (Change in momentum)/(Time)
- N = (kgm/sec OR N/sec)/(sec)
- N = (kgm/sec OR N/sec)/(sec)
- Power = Current x Voltage
- Forces
- Contact
- Push,
Pull,
Friction,
etc.
- Push,
Pull,
Friction,
etc.
- Non-contact
- Gravity,
Magnetic,
Electrostatic,
etc.
- Gravity,
Magnetic,
Electrostatic,
etc.
- Resultant Forces
- The sum of all the forces
acting upon an object.
- If the resultant force is 0N, then acceleration is 0m/sec.
- This means that the object is either:
- Stationary.
- Travelling at a constant speed.
- Stationary.
- This means that the object is either:
- The sum of all the forces
acting upon an object.
- Momentum
- Momentum = Mass x Velocity
- Principle of Conservation of Momentum
- In a collision/explosion, the total
momentum before is equal to the
total momentum afterwards.
- Airbags increase the time it takes for
the momentum change to happen
thus reducing the force on the person.
- Airbags increase the time it takes for
the momentum change to happen
thus reducing the force on the person.
- MaVa + MbVb = MaVa + MbVb
- In a collision/explosion, the total
momentum before is equal to the
total momentum afterwards.
- Momentum = Mass x Velocity
- Contact
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