Energy stores and systems

What happens when energy is transferred?

The energy is stored in one object's energy stores

What different types of energy stores are there?

Thermal

How is energy transferred?

1) Mechanically - force doing work
2) Electrically - work done by moving charges
3) Heating/Radiation - light

What is a system?

A single object or group of objects that you're interested in.

What happens when a system changes?

Energy is transferred - it can be transferred into/away from the system

What is a closed system?

A system where neither matter nor energy can enter or leave

What is the net change in the total energy of a closed system?

Always zero

What is work done?

Energy transferred

When can work done be done?

When a current flows or by a force moving an object