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): Rolling without slipping problems
David explains how to solve problems where an object rolls without slipping. Class 11 Physics (India) Let's learn, practice, and master top…
VideoFree15 minutes
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Class 11 Physics (India): Unit circle
Learn how to use the unit circle to define sine, cosine, and tangent for all real numbers. Class 11 Physics (India) Let's learn, practice, …
VideoFree9
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Class 11 Physics (India): More on Normal force (shoe on wall)
David shows how to determine the normal force for a shoe shoved against a wall with a diagonal force. Class 11 Physics (India) Let's learn,…
VideoFree7 minutes
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Class 11 Physics (India): 𝘶-substitution: multiplying by a constant
Manipulating the expression to make u-substitution a little more obvious. Class 11 Physics (India) Let's learn, practice, and master topics…
VideoFree6
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Class 11 Physics (India) - Hindi: Introduction to work and energy (Hindi)
Introduction to work and energy. Class 11 Physics (India) - Hindi To help students who prefer to learn by watching Hindi videos, we've crea…
VideoFree7
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Class 12 Physics (India): Bohr model radii
Using equation for Bohr model radii to draw shell model for n=1 to 3, and calculating the velocity of a ground state electron. Class 12 Phy…
VideoFree7 minutes
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Class 11 Physics (India): Differentiating polynomials
Sal differentiates f(x)=x⁵+2x³-x², and evaluates the derivative at x=2. Class 11 Physics (India) Let's learn, practice, and master topics o…
VideoFree7
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Class 11 Physics (India): Thermodynamics part 2: Ideal gas law
To begin, Sal solves a constant temperature problem using PV=PV. Then he relates temperature to kinetic energy of a gas. In the second half…
VideoFree10 minutes
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Class 11 Physics (India) - Hindi: Work as the transfer of energy (Hindi)
Ram explains "work" as the way forces transfer energy to and from objects. Class 11 Physics (India) - Hindi To help students who prefer to …
VideoFree5
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Class 11 Physics (India) - Hindi: Free body diagram with angled forces worked example (Hindi)
Ram draws a free body diagram for a box held stationary against a wall with a force at an angle theta. Class 11 Physics (India) - Hindi To …
VideoFree6
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Class 12 Physics (India): Forward and reverse current mechanism
What's the mechanism of charge flow in forward and reverse bias? In this video, let's go deeper and explore the mechanism of the current in…
VideoFree12
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Class 11 Physics (India): Gravitational potential energy at large distances
Learn how to calculate gravitational potential energy when we can no longer assume the gravitational field is uniform. Class 11 Physics (In…
VideoFree5
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Class 11 Physics (India) - Hindi: Young's modulus (Hindi)
In this video let's explore this thing called 'Young's modulus' which gives a relationship between the stress and strain for a given materi…
VideoFree12
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Class 11 Physics (India): Direction of vectors from components: 3rd & 4th quadrants
Sal finds the direction angle of a vector in the third quadrant and a vector in the fourth quadrant. Class 11 Physics (India) Let's learn, …
VideoFree7
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Physics: Foil leaf electroscope
Foil Leaf Electroscope. Aluminum leaves repel in the presence of a charged object Physics Learn about the basic principles that govern the …
VideoFree1 minute