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): Angular motion variables
David explains the meaning of angular displacement, angular velocity, and angular acceleration. Class 11 Physics (India) Let's learn, pract…
VideoFree13 minutes
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Physics: Question 3b: 2015 AP Physics 1 free response
How doubling spring compression impacts stopping distance Physics Learn about the basic principles that govern the physical world around us…
VideoFree6 minutes
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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 12 Physics (India): Output characteristics of NPN transistor
Let's explore the behaviour of output current (collector current Ic) as the output voltage (Vce) is changed in an NPN transistor. Class 12 …
VideoFree9
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Chemistry: Van der Waals equation
The Van der Waals equation as an adjustment of the ideal gas equation to better account for gas molecule volume and intermolecular interact…
VideoFree10 minutes
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Class 12 Physics (India): Red shift
Class 12 Physics (India) It is now time to dive deeper into the world of physics with topics from class 12 (NCERT) such as electrostatics, …
VideoFree10 minutes
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Physics: Introduction to tension (part 2)
A slightly more difficult tension problem. Physics Learn about the basic principles that govern the physical world around us. Solid underst…
VideoFree10 minutes
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Class 11 Physics (India): Vector magnitude from graph
Sal finds the magnitude of a vector given its graph. Class 11 Physics (India) Let's learn, practice, and master topics of class 11 physics …
VideoFree4
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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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Health and medicine: Overview of psychoactive drugs
Visit us (http://www.khanacademy.org/science/healthcare-and-medicine) for health and medicine content or (http://www.khanacademy.org/test-p…
VideoFree7 minutes
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Class 11 Physics (India): Moments (part 2)
2 more moment problems. Class 11 Physics (India) Let's learn, practice, and master topics of class 11 physics (NCERT) starting with kinemat…
VideoFree14 minutes
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Chemistry: Resonance and dot structures
Drawing resonance structures and resonance hybrid using example of nitrate anion. Chemistry Did you know that everything is made out of che…
VideoFree6 minutes
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Electrical engineering: LC natural response derivation 1
We begin the derivation of the natural response of the LC circuit, by modeling it with a 2nd-order differential equation. Electrical engine…
VideoFree7 minutes
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Chemistry: 2015 AP Chemistry free response 3c
Choosing an indicator for a titration. From 2015 AP Chemistry free response 3c. Chemistry Did you know that everything is made out of chemi…
VideoFree1 minute
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Electrical engineering: LC natural response example
We solve the voltage and current of an example LC circuit with given values for L and C, and an initial charge on the capacitor Electrical …
VideoFree7 minutes