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: Heat of formation
Standard heat of formation or standard enthalpy change of formation. How heats of formation are calculated. Chemistry Did you know that eve…
VideoFree13 minutes
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Organic chemistry: Oxidation of aldehydes using Tollens' reagent
Oxidation of aldehydes to carboxylic acids using Tollens' reagent. Organic chemistry Sal and Jay cover topics covered in college organic ch…
VideoFree9 minutes
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Physics: Question 2ab: 2015 AP Physics 1 free response
Physics Learn about the basic principles that govern the physical world around us. Solid understanding of algebra and a basic understanding…
VideoFree12 minutes
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Organic chemistry: Reduction of carboxylic acids
How to reduce carboxylic acids using lithium aluminum hydride (and borane). Organic chemistry Sal and Jay cover topics covered in college o…
VideoFree9 minutes
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Class 11 Physics (India): Mass and weight clarification
Difference between mass and weight Class 11 Physics (India) Let's learn, practice, and master topics of class 11 physics (NCERT) starting w…
VideoFree11 minutes
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Class 11 Physics (India): Intuition behind formula for thermal conductivity
Intuition behind formula for thermal conductivity Class 11 Physics (India) Let's learn, practice, and master topics of class 11 physics (NC…
VideoFree6 minutes
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Physics: Ping pong ball launcher introduction
This video highlights the projectile (ping pong ball) launcher Physics Learn about the basic principles that govern the physical world arou…
VideoFree2 minutes
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Class 11 Physics (India) - Hindi: Airbus A380 take off time (Hindi)
Figuring how long it takes an a380 to take off given a constant acceleration. Class 11 Physics (India) - Hindi To help students who prefer …
VideoFree7
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Class 11 Physics (India): Three box system problem
In this video David explains how to easily find the acceleration of a three box system by treating it as a single mass. Class 11 Physics (I…
VideoFree6 minutes
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Class 11 Physics (India): The equation of a wave
In this video David shows how to determine the equation of a wave, how that equation works, and what the equation represents. Class 11 Phys…
VideoFree15 minutes
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Class 11 Physics (India): 𝑒 and compound interest
Sal introduces a very special number in the world of math (and beyond!), the constant 𝑒. Class 11 Physics (India) Let's learn, practice, an…
VideoFree12
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Class 11 Physics (India): Worked example: matching an input to a function's output (graph)
Sal finds the input value for which g(x)=-2 given the graph of g. Class 11 Physics (India) Let's learn, practice, and master topics of clas…
VideoFree1
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Class 11 Physics (India) - Hindi: Cross product and torque (Hindi)
The cross product and the direction of torque. Class 11 Physics (India) - Hindi To help students who prefer to learn by watching Hindi vide…
VideoFree8
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AP®︎ Physics 1: Parallel resistors (part 1)
Resistors are in parallel if their terminals are connected to the same two nodes. The equivalent single parallel resistance is smaller than…
VideoFree11 minutes
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Physics: Mechanical advantage (part 3)
Introduction to pulleys and wedges Physics Learn about the basic principles that govern the physical world around us. Solid understanding o…
VideoFree11 minutes