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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: Relationship between angular velocity and speed (Hindi)

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How angular velocity relates to speed. Class 11 Physics (India) - Hindi To help students who prefer to learn by watching Hindi videos, we'v…

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Class 11 Physics (India): The force of tension

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David explains what the force of tension is, how to solve for it, and some common misconceptions involving the force of tension. Class 11 P…

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Class 11 Physics (India) - Hindi: Total final velocity for projectile (Hindi)

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Calculating the total final velocity for a projectile landing at a different altitude. Class 11 Physics (India) - Hindi To help students wh…

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Physics: Electromagnetic field (forward vs. reverse)

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Apply current in both directions and notice the response is different. Physics Learn about the basic principles that govern the physical wo…

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Class 12 Physics (India): Electric field

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We can think of the forces between charges as something that comes from a property of space. That property is called the electric field. Cl…

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Class 12 Physics (India): Snell's law example 1

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Snell's Law Example 1 Class 12 Physics (India) It is now time to dive deeper into the world of physics with topics from class 12 (NCERT) su…

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Class 11 Physics (India): Relative speed of sound in solids, liquids, and gases

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Sounds travels at different speeds in different media Class 11 Physics (India) Let's learn, practice, and master topics of class 11 physics…

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Class 11 Physics (India) - Hindi: Treating systems the easy way (Hindi)

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Ram shows the easier way to find the acceleration of two masses connected by a rope. Class 11 Physics (India) - Hindi To help students who …

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Physics: Electrode (surface area test)

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What's the difference between one piece of metal and three pieces of metal in our cell. Does deflection change? Why? Physics Learn about th…

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Class 12 Physics (India): Minimum deviation in prism

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What causes the famous 22-degree halo around the sun? In this video let's explore the concept of minimum deviation in a prism and how that …

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Class 11 Physics (India): Derivative & the direction of a function

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Sal analyzes various graphs to find intervals where the derivative of the graphed function is positive or negative. Class 11 Physics (India…

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Class 11 Physics (India): Applying Newton's first law of motion

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Sal applies Newton's first law the answer some true/false statements about why objects move (or not). Class 11 Physics (India) Let's learn,…

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Physics: Electrode (distance test)

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Does the distance between the copper and zinc electrodes matter? What happens to the deflection when we hold them close vs. far apart? Why …

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Class 11 Physics (India) - Hindi: Capillary action and why we see a meniscus (Hindi)

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How capillary action and the meniscus are related to intermolecular forces in water. Class 11 Physics (India) - Hindi To help students who …

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Class 11 Physics (India) - Hindi: Bernoulli's example problem 1 (Hindi)

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Ram solves an example problem where liquid exits a hole in a container. Class 11 Physics (India) - Hindi To help students who prefer to lea…