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The joule (J) is the unit of energy in the International System of Units (SI), equal to the work done by a force of one newton over a distance of one metre. It is named after James Prescott Joule, an English physicist who studied the relationship between heat and mechanical work.
A joule is the basic SI unit of energy, equal to the kinetic energy of a kilogram mass moving at one meter per second. Learn how to use joules in chemistry, physics, and everyday examples.
Joule is the SI unit of work or energy, equal to the work done by a force of one newton acting through one metre. Learn how joule is related to other units of measurement, such as ergs, foot-pounds, and watt-seconds, and see examples of energy conversion and conservation.
Learn what a joule is, how to calculate work and energy in joules, and how to convert joules to other units of energy. Find examples, practice questions, and a comprehensive table of joule multiples and conversions.
Learn about the SI unit of energy, the joule, and other units used in different fields and applications. Find out how to convert joules to other units such as calories, electronvolts, or tonnes of TNT.
A joule is a unit of energy in the SI system, named after James Prescott Joule. It measures the work done by a force of 1 newton over a distance of 1 metre, or the power of 1 watt in one second.
Joule (J) is the SI unit of energy that measures the work done by a force. It is used in various fields such as physics, engineering, chemistry, electricity, mechanics, and thermodynamics. Learn more about joule and its applications with examples.
The joule (symbol J) is the SI unit of energy—a measure of the capacity to do work or generate heat. One joule equals the work done (or energy expended) by a force of one newton (N) acting over a distance of one meter (m).
Joule is a derived unit of energy. It is equal to the energy transferred to an object when a force of one newton acts on that object in the direction of its motion through a distance of one metre. 1 joule = 0.239 Calories
A joule is the amount of energy needed to lift an apple one meter. Learn how to convert joules to other units, such as kWh, and see examples of joules in human activities.