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The joule (/ dʒ uː l / JOOL, or / dʒ aʊ l / JOWL; symbol: J) is the unit of energy in the International System of Units (SI). [1] It is equal to the amount of work done when a force of one newton displaces a mass through a distance of one metre in the direction of that force.
19 Μαΐ 2023 · 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).
14 Μαΐ 2023 · What is the fundamental unit of force? The SI unit of force is the newton, symbol N. The base units relevant to force are: The metre, unit of length — symbol m. The kilogram, unit of mass — symbol kg.
7 Μαρ 2019 · The joule (symbol: J) is the basic SI unit of energy. A joule is equal to the kinetic energy of a kilogram mass moving at the speed of one meter per second (one joule is a kg⋅m 2 ⋅s −2).
The SI units of quantities can be derived using their equation, e.g. F = ma. For example, to find the SI units of force (F) multiply the SI units of mass and acceleration: kg x ms-2 = kgms-2 Which is the SI unit of force, also known as N. A homogeneous equation is one where the units on either side are the same.
Planck's constant (h) is defined to be exactly 6.62607015 × 10 −34 joule seconds, where the joule [J] is a unit of energy equivalent to a kilogram meter squared per second squared [kg m 2 /s 2]. Planck's constant is therefore a universal constant that relates mass, length, and time.
The standard unit used to measure energy and work done in physics is the joule, which has the symbol J. In mechanics, 1 joule is the energy transferred when a force of 1 Newton is applied to an object and moves it through a distance of 1 meter.
