EASY. To raise an apple one meter in the air, you must use one joule of kinetic energy. Joule Per Kilogram Per Kelvin (J/kg-K) is a unit in the category of Specific heat.This unit is commonly used in the SI unit system. Energy is generally defined as the potential to do work or produce heat. Thus, a kiloJoule (kJ) is 1000 Joules and a MegaJoule (MJ) is 1,000,000 Joules. Work is equal to the product of the force and the distance through which it produces movement. However, the newton meter is usually used as a measure of torque, not energy. The amount of electricity required to light a 1 W, This page was last edited on 26 December 2020, at 21:42. The energy rating a flash is given is not a reliable benchmark for its light output because there are numerous factors that affect the energy conversion efficiency. Usually, 4.184 joules of heat energy is necessary to increase the temperature of a unit weight (say 1 g) of water from 0 degrees to 1 degree Celsius. Joule Definition: A joule (symbol: J) is a derived unit of energy in the International System of Units (SI). The SI unit of energy is the joule, the SI unit for power is the watt, which is equal to joules/second.That is called "power". * Most scientific studies are now carried out using the joule (an SI unit). The above table shows some derived quantities and units expressed in terms of SI units with special names. Solution Show Solution. the name joule, but has not given the unit of torque any special name, hence it is simply the newton-metre (N⋅m) – a compound name derived from its constitu… A joule (/ ˈ dʒ aʊ l / or sometimes / ˈ dʒ uː l /) is a unit in the SI system. [25] The watt-second is the energy equivalent to the power of one watt sustained for one second. 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).Alternatively, it is the amount of work done on an object when a force of one newton acts in the direction of the object's motion over a distance of one meter (1 joule equal 1 newton meter or N⋅m). Studio flashes, using larger capacitors and higher voltages, are in the 200–2000 watt-second range. As with every SI unit named for a person, its symbol starts with an upper case letter (J), but when written in full it follows the rules for capitalisation of a common noun; i.e., "joule Joule, unit of work or energy in the International System of Units (SI); it is equal to the work done by a force of one newton acting through one metre. This is due to the fact that a joule is an extremely small amount of … Joule Per Kilogram Per Kelvin (J/kg-K) has a dimension of L 2 T-2 Q-1 where L is length, T is time, and Q is temperatur. Symbol: J. The unit is pronounced to rhyme with "tool", and is named in honor of the physicist James Prescott Joule (1818-1889). Which Of The Following Is/are Equal To 1 Joule? The definition of a joule is as follows: The joule (symbol J, also called newton meter, watt second, or coulomb volt) is the SI unit of energy and work. Joule, James Prescott 1818-1889. commented Jan 3, 2016 by luckky ramya Expert (1.8k points) The SI derived unit used to measure energy or work. Scientific definitions for joule (2 of 2) This should not be confused with a watt which is a unit of power and a rate of how fast energy is used.. The energy required to accelerate a 1 kg mass at 1 m⋅s. The SI unit of energy is the joule, the SI unit for power is the watt, which is equal to joules/second.That is called "power". 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