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Explore conceitos de física com vídeos e exercícios interativos na Khan Academy.

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 …

NCERT Physics Class 10 4 units · 50 skills Unit 1 Light – reflection & refraction Unit 2 The human eye and the colourful world Unit 3

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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。

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).

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