Energy Stores

Forms of Energy

Thermal, kinetic, gravitational potential, elastic potential, chemical, magnetic, electrostatic, and nuclear energy are different forms of energy.

Energy Transfer

Energy can be transferred between different forms and objects through mechanical, electrical, heating, or radiation processes.

System

In physics, a system is a collection of matter where energy can be transferred within the system or between objects/forms.

Open System

An open system allows energy exchange with the outside world.

Closed System

A closed system is isolated, where energy transfer within the system results in no overall change.

Work Done

Work done is a term for energy transferred, with mechanical and electrical work being significant types.

Mechanical Work

Involves using force to move objects.

Electrical Work

Overcoming resistance in circuits.

Friction

Friction between brakes and wheels causes energy transfer, as seen in the example of a train applying brakes to slow down.

Energy Stores

Changes in energy stores occur as work is done, impacting the system's energy balance.