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) - Hindi: Work/energy problem with friction (Hindi)
A conservation of energy problem where all of the energy is not conserved. Class 11 Physics (India) - Hindi To help students who prefer to …
VideoFree12
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Class 10 Physics (India): Solved example: hypermetropia
Let's help our friend, Veena, to select the right lens for her eyes. Class 10 Physics (India) Let's explore the mysteries of light and elec…
VideoFree7
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Class 10 Physics (India): Why do stars twinkle (but planets don't)?
Let's explore what causes the twinkling effect of stars. We will also explore why planets, sun and moon don't seem to twinkle. Created by M…
VideoFree8
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Class 11 Physics (India) - Hindi: Intro to springs and Hooke's law (Hindi)
Introduction to Hooke's Law. Class 11 Physics (India) - Hindi To help students who prefer to learn by watching Hindi videos, we've created …
VideoFree13
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Class 11 Physics (India) - Hindi: Projectile at an angle (Hindi)
Figuring out the horizontal displacement for a projectile launched at an angle. Class 11 Physics (India) - Hindi To help students who prefe…
VideoFree13
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Class 11 Physics (India): Doppler effect formula when source is moving away
Let's look at the case where the source is moving away from the listener Class 11 Physics (India) Let's learn, practice, and master topics …
VideoFree9 minutes
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Class 11 Physics (India): Area under rate function gives the net change
If you have a function representing rate, what does the area under its curve represent? Class 11 Physics (India) Let's learn, practice, and…
VideoFree7
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Class 11 Physics (India): Airbus A380 take-off time
Figuring how long it takes an A380 to take off given a constant acceleration Class 11 Physics (India) Let's learn, practice, and master top…
VideoFree8 minutes
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Class 11 Physics (India): Vector magnitude from components
Sal finds the magnitude of a vector given its components of (5, -3). Class 11 Physics (India) Let's learn, practice, and master topics of c…
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Class 11 Physics (India): Avogadro's law
Class 11 Physics (India) Let's learn, practice, and master topics of class 11 physics (NCERT) starting with kinematics and then moving to d…
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Organic chemistry: Diels-Alder: intramolecular
How to analyze the product of an intramolecular Diels-Alder reaction Organic chemistry Sal and Jay cover topics covered in college organic …
VideoFree7 minutes
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Class 11 Physics (India): Bernoulli's equation (part 4)
Clarification of, and more thoughts on, the Bernoulli's equation example problem where liquid exits a hole in a container. Class 11 Physics…
VideoFree5 minutes
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Class 11 Physics (India): Formal definition of the derivative as a limit
The derivative of function f at x=c is the limit of the slope of the secant line from x=c to x=c+h as h approaches 0. Symbolically, this is…
VideoFree16
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Class 11 Physics (India): Scientific notation example: 0.0000000003457
Can you imagine if you had to do calculations with very, very small numbers? How would you handle all those zeros to the right of the decim…
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Class 11 Physics (India): Why use I beams in construction?
When constructing buildings, why do we always use beams which have a cross-sectional shape of I? Let's explore this intuitively in this vid…
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