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Ups. Algo salió mal. Por favor inténtalo otra vez. Oh no, parece que encontramos un error. Necesitas actualiza. Si este problema persiste, avísanos.
Electricity | NCERT Physics Class 10 | Science | Khan Academy
NCERT Physics Class 10 4 units · 50 skills Unit 1 Light – reflection & refraction Unit 2 The human eye and the colourful world Unit 3
Академия Хана | Академия Хана - Khan Academy
Ой! Что-то пошло не так. Пожалуйста, попробуйте повторить Ваши действия еще раз. Ой, мы кажется столкнулись с ошибкой. Вам нужно обновите страницу. Если эта проблема …
Khan Academy | Free Online Courses, Lessons & Practice
Learn for free about math, art, computer programming, economics, physics, chemistry, biology, medicine, finance, history, and more. Khan Academy is a nonprofit with the mission of …
可汗学院 | 可汗学院 - Khan Academy
可汗学院提供免费的物理学课程，涵盖基础概念和进阶主题，帮助学习者深入理解物理世界。
What is thermal energy? (article) | Khan Academy
A whole branch of physics, thermodynamics, deals with how heat is transferred between different systems and how work is done in the process (see the 1ˢᵗ law of thermodynamics).
Fresh Updates to Khan Academy’s Physics Courses Bring More …
Aug 18, 2025 · Explore Khan Academy’s updated AP Physics 1 and NGSS-aligned Middle School Physics courses, featuring new videos, interactive practice, and hands-on activities to support …
Khan Academy | Khan Academy
Opa! Alguma coisa deu errado. Tente novamente. Ah não, parece que ocorreu um erro. Você precisa atualizar. Se o problema persistir, fale conosco.
Khan Academy | Khan Academy
Oups. Il y a eu un problème. S'il vous plaît, veuillez reessayer. Oups, on dirait qu'il y a eu une erreur ! Vous devez actualiser. Si le problème persiste, dites-nous.