![]() For example, any given body has kinetic energy if it is in motion. Hence, heat transferred may become thermal energy, while work done may manifest itself in the form of mechanical energy.Īll forms of energy are associated with motion. After it has been transferred, energy is always designated according to its nature. There are, moreover, heat and work-i.e., energy in the process of transfer from one body to another. It may exist in potential, kinetic, thermal, electrical, chemical, nuclear, or other various forms. This principle is known as the conservation of energy.Įnergy, in physics, the capacity for doing work. It can only be changed from one form to another. SpaceNext50 Britannica presents SpaceNext50, From the race to the Moon to space stewardship, we explore a wide range of subjects that feed our curiosity about space!Įnergy can be neither created nor destroyed.Learn about the major environmental problems facing our planet and what can be done about them! Saving Earth Britannica Presents Earth’s To-Do List for the 21st Century.Britannica Beyond We’ve created a new place where questions are at the center of learning.100 Women Britannica celebrates the centennial of the Nineteenth Amendment, highlighting suffragists and history-making politicians. WORDPOWER MADE EASY HOW TOCOVID-19 Portal While this global health crisis continues to evolve, it can be useful to look to past pandemics to better understand how to respond today.Student Portal Britannica is the ultimate student resource for key school subjects like history, government, literature, and more.This Time in History In these videos, find out what happened this month (or any month!) in history.#WTFact Videos In #WTFact Britannica shares some of the most bizarre facts we can find.Demystified Videos In Demystified, Britannica has all the answers to your burning questions.Britannica Explains In these videos, Britannica explains a variety of topics and answers frequently asked questions.Britannica Classics Check out these retro videos from Encyclopedia Britannica’s archives.Loaded with helpful reviews, progress checks, and quizzes to reinforce the material, this classic resource-first published sixty years ago-has helped millions learn to speak and write with greater sophistication. The author delves into etymology to arm the reader to decode unfamiliar words, provides phonetic pronunciations, gives tips on avoiding common spelling errors, and offers useful sections on which fussy, old-fashioned grammar rules are valid and which are outdated or misguided and can be safely ignored. Arranged in thematic sections-on everything from how to flatter friends and insult enemies to how to talk precisely about science and medicine-the book is written in a lively, accessible, and often humorous style, presenting ideas and a method of broadening your knowledge as an integral part of vocabulary-building. Word Power Made Easy provides a simple, step-by-step method for increasing knowledge and mastery of the language. The most effective English language vocabulary builder available: this time-tested classic has helped millions achieve mastery of English and improve their communications skills in business, the classroom, and in life. ![]()
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