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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Chemistry: Electrolysis of molten sodium chloride
Example quantitative electrolysis problem using molten sodium chloride. Chemistry Did you know that everything is made out of chemicals? Ch…
VideoFree12 minutes
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Class 12 Physics (India): Lens makers formula
Let's derive the famous lens makers formula. This formula only works for thin lenses. Class 12 Physics (India) It is now time to dive deepe…
VideoFree14
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Class 11 Physics (India): Force vs. time graphs
David explains how to use a force vs. time graph to find the change in momentum and solves an example problem to find the final velocity of…
VideoFree8 minutes
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Physics: Quantum numbers
Definition of orbital as region of high probability for finding electron, and how quantum numbers are used to describe the orbitals. Compar…
VideoFree12 minutes
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Class 11 Physics (India): Vectors word problem: hiking
Sal solves a word problem with vectors where he finds the total straight-line distance traveled over a few days. Class 11 Physics (India) L…
VideoFree7
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Health and medicine: Basics of egg development
Health and medicine The medical world can be a confusing place. Patients, their families, and even students entering health fields might fe…
VideoFree7 minutes
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Electrical engineering: Parts
In this video we take a quick a look at some of the parts we used to make Bit-zee. Although we highly recommend you create your own Bit-zee…
VideoFree4 minutes
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Class 11 Physics (India): Force of friction keeping the block stationary
Block of wood kept stationary by the force of friction (Correction made in next video) Class 11 Physics (India) Let's learn, practice, and …
VideoFree9 minutes
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Class 12 Physics (India): Triboelectric effect and charge
Learn the physics behind why a balloon clings to things after you rub it on a sweater Class 12 Physics (India) It is now time to dive deepe…
VideoFree12 minutes
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Class 12 Physics (India): Total internal reflection
Critical incident angle and total internal reflection Class 12 Physics (India) It is now time to dive deeper into the world of physics with…
VideoFree8 minutes
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Class 12 Physics (India): Magnetic force between two currents going in opposite directions
Sal shows how to determine the magnetic force between two currents going in opposite directions. Class 12 Physics (India) It is now time to…
VideoFree11 minutes
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Physics: Pith ball electroscope
Primitive device for measuring electrostatic force Physics Learn about the basic principles that govern the physical world around us. Solid…
VideoFree1 minute
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Chemistry: Calculating internal energy and work example
Worked example calculating the change in internal energy for a gas using the first law of thermodynamics Chemistry Did you know that everyt…
VideoFree7 minutes
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Class 11 Physics (India): Graph of y=tan(x)
Sal draws the graph of the tangent function based on the unit circle definition of the function. Class 11 Physics (India) Let's learn, prac…
VideoFree10
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Health and medicine: Hepatic lobule
Health and medicine The medical world can be a confusing place. Patients, their families, and even students entering health fields might fe…
VideoFree3 minutes