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Work and Energy (Types of Energy)

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by

H. Kwan

on 31 October 2013

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Transcript of Work and Energy (Types of Energy)

Energy and work are both measured in Joules.
In base SI units:
Obstacle 1
Obstacle 2
Obstacle 3
Goal
Start
What is Energy?
The Energy of Motion
Potential Energy (5 Types)
Any questions????
Work
&
Energy

But... What is Work?
Units
Kinetic Energy
Energy that is stored.
Energy
is the ability
to do work.
`
1 J = 1 N·m = 1 kg·m /s
2
2
James Joules
1818 - 1889
Energy can be broken down into 2 categories...
Types of Energy
Kinetic Energies:
These all have to do with the energy of motion.
Potential Energies:
These all have to do with some type of stored energy.
Mechanical Kinetic Energy (MKE)
The energy of any normal moving object.
Thermal
The energy of vibrating atoms and molecules.
It’s like mechanical kinetic energy, but on the VERY small scale.
Radiant (Light) Energy
The energy of light, or any other electromagnetic radiation (such as x-rays or microwaves).
Sound
The vibrations of mediums that transfer sounds.
Gravitational Potential Energy (GPE)
The energy a high up object has.
It gives off this energy by moving down.
Electrical Potential Energy
The
stored
energy that
charged particles
have because they want to move towards (or away from) other charged particles.
This is a lot like gravity / GPE!
Elastic Potential Energy
The energy stored in any object that is
compressed
or
stretched
and wants to return to its original shape.
Chemical Potential Energy
The energy stored in chemical bonds.
As these bonds are broken (or rearranged) the energy is released.
Nuclear Potential Energy
Very similar to chemical energy.
Here, the atomic nucleus within the atom is changed rather than rearranging atoms within molecules.
Nuclear Fission
(Making Small Atoms from Big Ones)
Nuclear Fusion
(Making Big Atoms from Small Ones)
Full transcript