Further explained, it’s the Any object (also known as mass) that is moving is said to have KE.įor something to have KE, something must do work to it. There are only two primary forms of energy. Therefore, kinetic energy is the energy of motion. The term kinetic originates from the Greek word kinesis and means motion. That sounds a bit complex, so let’s sum it up.
The Merriam-Webster Dictionary defines the word kinetic as “of or relating to the motion of material bodies and the forces and energy associated therewith.” What Is Kinetic, and What Does It Mean?įor starters, you’ll need to know what kinetic means. Read on to gain a basic understanding of this fascinating form of energy. From its definition and characteristics to examples and how we use it in chemistry, and you’ll find kinetic energy explained in both technical and simplified terms.
This article will cover everything you need to know about kinetic energy. As the world around us shifts to a more sustainable living mindset, we may find ourselves asking, “What is kinetic energy? Can we harness it to create clean energy”? However, if you don’t have a solid understanding, you’re not alone. June 1992.Most of us are familiar with the term kinetic energy. DOE Fundamentals Handbook, Volume 1, 2, and 3. Department of Energy, THERMODYNAMICS, HEAT TRANSFER, AND FLUID FLOW. Fundamentals of Engineering Thermodynamics, Fifth Edition, John Wiley & Sons, 2006, ISBN: 978-7-0 Thermodynamics in Nuclear Power Plant Systems. Nuclear Systems Volume I: Thermal Hydraulic Fundamentals, Second Edition. Nuclear Reactor Engineering: Reactor Systems Engineering, Springer 4th edition, 1994, ISBN: 978-0412985317 Stacey, Nuclear Reactor Physics, John Wiley & Sons, 2001, ISBN: 0- 471-39127-1. Baratta, Introduction to Nuclear Engineering, 3d ed., Prentice-Hall, 2001, ISBN: 8-1. Lamarsh, Introduction to Nuclear Reactor Theory, 2nd ed., Addison-Wesley, Reading, MA (1983). The area factor A 1-2, is the area viewed by body 2 of body 1, and can become fairly difficult to calculate. The net flow rate of heat between them is given by: Two bodies that radiate toward each other have a net heat flux between them. It can be seen and radiation heat transfer is important at very high temperatures and in a vacuum. By definition, a black body in thermal equilibrium has an emissivity of ε = 1.0. The emissivity, ε, of the surface of a material is its effectiveness in emitting energy as thermal radiation and varies between 0.0 and 1.0. This relationship is called the Stefan–Boltzmann law.
Where σ is a fundamental physical constant called the Stefan–Boltzmann constant, equal to 5.6697×10 -8 W/m 2K 4. It can be expressed by the following equation: The radiant heat transfer rate from a body (e.g., a black body) to its surroundings is proportional to the fourth power of the absolute temperature. Most energy of this type is in the infra-red region of the electromagnetic spectrum, although some of it is in the visible region. Any material that has a temperature above absolute zero gives off some radiant energy. It does not need a medium, such as air or metal, to take place. Radiant heat transfer is very important in the power industry because it is one of the most important ways to transfer thermal energy. The quantity of radiant energy may be calculated by integrating radiant flux for time. The term “ radiant energy” is most commonly used in radiometry, solar energy, heating, and lighting. In physics, radiant energy is the energy of electromagnetic and gravitational radiation. At its core, the Sun fuses 620 million metric tons of hydrogen each second. The Sun generates its energy by nuclear fusion of hydrogen nuclei into helium.
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