One joule equals the work done or energy expended by a force of one newton N acting over a distance of one meter m. One newton equals a force that produces an acceleration of one meter per second s per second on a one kilogram kg mass.
One joule is defined as the amount of energy exerted when a force of one newton is applied over a displacement of one meter. One joule is the equivalent of one watt of power radiated or dissipated for one second. In some applications, the British thermal unit Btu is used to express energy. Use the scientific term joule for talking about work, energy, or heat.
Calorimeter used by Joule in his determination of the mechanical equivalent of heat. James Prescott Joule studied the nature of heat and established its relationship to mechanical work. He laid the foundation for the theory of conservation of energy, which later influenced the First Law of Thermodynamics. James Prescott Joule experimented with engines, electricity and heat throughout his life. The experiment that showed most directly the connection between mechanical action and heat involved the stirring of water by a paddle.
Joule recognized that, in a container that cannot exchange heat with the surroundings, if a gas is compressed, and then allowed to expand into a vacuum, the expanding gas does no work. 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.
Scientific definitions for joule 1 of 2. What is the SI unit for energy? What is the unit for work? The SI unit of work is the joule J , which is defined as the work expended by a force of one newton through a displacement of one metre. How many volts is a joule? Which is the largest unit of energy?
What is Joule's made up of? What do you mean by 1 Joule? One joule is defined as the amount of energy exerted when a force of one newton is applied over a displacement of one meter. One joule is the equivalent of one watt of power radiated or dissipated for one second. In some applications, the British thermal unit Btu is used to express energy. Is a joule a Newton meter? When cats are chasing something, they move very fast.
In saying that, we are more correct than we realize. One form of energy is seen when an object is moving and this type of energy is the basis for many chemical processes. Energy is defined as the capacity to do work or to produce heat. As discussed previously, kinetic energy is one type of energy and is associated with motion. Another frequently encountered energy is potential energy , a type of energy that is stored in matter and released during a chemical reaction.
Another common unit of energy that is often used is the calorie cal , which is equivalent to 4. Use the link below to answer the following questions:. Skip to main content.
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