The joule (J) is the SI derived unit of power and work. It’s named after James Prescott Joule, a British physicist who made important contributions to the examine of power. One joule is the same as the work executed by a power of 1 newton appearing over a distance of 1 meter.
The joule is an important unit in physics, as it’s used to quantify the quantity of power concerned in many alternative processes. For instance, the power of a shifting object is given by the equation E = 1/2 mv^2, the place E is the power in joules, m is the mass of the thing in kilograms, and v is the speed of the thing in meters per second. The joule can be used to measure the power content material of meals, the effectivity of engines, and the ability output {of electrical} units.
