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Mechanical Energy Formula
Mechanical energy is calculated using the formula ME = PE + KE, where PE is potential energy and KE is kinetic energy.
Forms of Energy
Energy exists in various forms, including mechanical, thermal, chemical, electrical, and radiant energy.
Energy Efficiency
Energy efficiency is the ratio of useful energy output to the total energy input, often expressed as a percentage.
Kinetic Energy Formula
Kinetic energy is calculated using the formula KE = 1/2 mv², where m is mass and v is velocity.
Potential Energy in Gravity
Gravitational potential energy is calculated using the formula PE = mgh, where m is mass, g is acceleration due to gravity, and h is height.
Thermal Equilibrium
Thermal equilibrium occurs when two objects at different temperatures reach the same temperature after thermal energy transfer.
Insulation
Insulation is a material that reduces the rate of heat transfer, helping to maintain temperature.
Energy Audit
An energy audit is an assessment of energy use in a building or system aimed at identifying areas for improvement.
Entropy
Entropy is a measure of disorder or randomness in a system, often associated with the second law of thermodynamics.
Friction
Friction is the resistance that one surface or object encounters when moving over another, often converting kinetic energy into thermal energy.
Renewable Energy
Energy that is generated from natural processes that are continuously replenished, such as solar, wind, and hydropower.
Non-Renewable Energy
Energy sources that are finite and will eventually run out, such as coal, oil, and natural gas.
Energy Conservation
The practice of using less energy to provide the same level of energy service.
Power
The rate at which energy is transferred or converted, commonly measured in watts.
Energy Source
The origin from which energy is obtained, such as fossil fuels, solar, or wind.
Fuel Cells
Devices that convert chemical energy directly into electrical energy through a chemical reaction.
Photovoltaics
Technology that converts sunlight directly into electricity using solar cells.
Nuclear Energy
Energy released during nuclear fission or fusion, often used in power plants to generate electricity.
Smart Grid
An electricity supply network that uses digital communications technology to detect and react to local changes in usage.
Energy Storage
The capture of energy produced at one time for use at a later time, commonly through batteries.
Biomass Energy
Energy produced from organic materials, such as plant and animal waste.
Geothermal Energy
Energy derived from the heat stored in the Earth.
Hydrogen Fuel
A clean fuel that, when consumed in a fuel cell, produces only water as a by-product.
Tidal Energy
Energy generated from the movement of tides caused by the gravitational pull of the moon and sun.
Energy Return on Investment (EROI)
A ratio that measures the amount of energy obtained from an energy resource compared to the amount of energy invested to obtain it.
Smart Meter
A device that records the consumption of electric energy in real time and communicates the information back to the utility for monitoring.
Wave Energy
Energy generated from the movement of sea waves, which can be harnessed for electricity generation.
Energy Policies
Rules and regulations established by governments to manage energy production and consumption.
Carbon Footprint
The total amount of greenhouse gases emitted directly or indirectly by an individual, organization, event, or product.
Sustainable Energy
Energy sourced in a way that meets current needs without compromising future generations' ability to meet their needs.
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