Khan Academy: 2757 products
Khan Academy is an organization on a mission. We're a not-for-profit with the goal of changing education for the better by providing a free world-class education for anyone anywhere.
All of the site's resources are available to anyone. It doesn't matter if you are a student, teacher, home-schooler, principal, adult returning to the classroom after 20 years, or a friendly alien just trying to get …
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Class 11 Physics (India): Buoyant force example problems
A couple of problems involving Archimedes' principle and buoyant forces. Class 11 Physics (India) Let's learn, practice, and master topics …
VideoFree10 minutes
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Class 12 Physics (India): Diffraction grating
What happens when there's way more than two holes? Class 12 Physics (India) It is now time to dive deeper into the world of physics with to…
VideoFree14 minutes
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Class 10 Physics (India): Magnification formula for lenses
Let's explore the magnification formula (M= v/u) for lenses and see how to find the image height and its nature (whether it's real or virtu…
VideoFree10
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Chemistry: The periodic table - classification of elements
Definitions of groups, periods, alkali metals, alkaline earth metals, halogens, and noble gases. How metals, non-metals, and metalloids can…
VideoFree9 minutes
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Health and medicine: Meet the placenta!
Learn how the needs of the fetus are met by the placenta, which is a special organ that belongs to both the mother and the fetus! Rishi is …
VideoFree13 minutes
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Organic chemistry: Stabilization of a conjugate base: electronegativity
How electronegativity affects the stabilization of a conjugate base (when comparing elements in the same period) Organic chemistry Sal and …
VideoFree4 minutes
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Class 11 Physics (India): Ultrasound medical imaging
Ultrasound medical imaging (also known as sonography) is a diagnostic imaging tool that uses high-frequency sound waves to create images of…
VideoFree6 minutes
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Class 11 Physics (India): Evaluating logarithms (advanced)
Sal evaluates log₂(8), log₈(2), log₂(⅛), and log₈(½). Class 11 Physics (India) Let's learn, practice, and master topics of class 11 physics…
VideoFree4
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Class 11 Physics (India): Introduction to Newton's law of gravitation
A little bit on gravity Class 11 Physics (India) Let's learn, practice, and master topics of class 11 physics (NCERT) starting with kinemat…
VideoFree9 minutes
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Class 11 Physics (India): Thermal conduction
Intuition behind how heat gets transferred through thermal conduction. Class 11 Physics (India) Let's learn, practice, and master topics of…
VideoFree7 minutes
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Physics: Question 3c: 2015 AP Physics 1 free response
Analytically analyzing how doubling spring compression impacts stopping distance Physics Learn about the basic principles that govern the p…
VideoFree8 minutes
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Chemistry: A look at a seductive but wrong Gibbs spontaneity proof
A look at why the "proof" of the relation between changes in Gibbs Free Energy and Spontaneity is wrong in many textbooks. Chemistry Did yo…
VideoFree7 minutes
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Class 11 Physics (India): Newton's second law of motion
Newton's second law of motion is F = ma, or force is equal to mass times acceleration. Learn how to use the formula to calculate accelerati…
VideoFree7 minutes
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Chemistry: The periodic table - transition metals
The definition of a transition metal, and how to write the electron configuration including examples for Fe and Zn. Chemistry Did you know …
VideoFree6 minutes
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Chemistry: Hess's law and reaction enthalpy change
Using Hess's Law and standard heats of formation to determine the enthalpy change for reactions Chemistry Did you know that everything is m…
VideoFree16 minutes