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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): Rotational version of Newton's second law

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David explains moment of inertia and the rotational version of Newton's second law and shows how to solve an example problem. Class 11 Phys…

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Class 11 Physics (India) - Hindi: Identifying centripetal force vectors for cars and satellites (Hindi)

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Identifying centripetal force vectors for cars and satellites Class 11 Physics (India) - Hindi To help students who prefer to learn by watc…

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Class 11 Physics (India) - Hindi: Worked example: motion problems (with definite integrals) (Hindi)

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What can you say about the velocity and position of a particle given its acceleration? Class 11 Physics (India) - Hindi To help students wh…

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Class 11 Physics (India) - Hindi: Stress and Strain (Hindi)

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To measure the elasticity of any material we need to define two quantities. Stress and strain. In this video let's explore what these are a…

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Class 11 Physics (India): Worked example: accumulation of change

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An example relating rates of change with a leaky bathtub. Class 11 Physics (India) Let's learn, practice, and master topics of class 11 phy…

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Class 11 Physics (India): Young's modulus of elasticity

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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…

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Class 11 Physics (India): 𝘶-substitution: rational function

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Another example of using u-subsitution Class 11 Physics (India) Let's learn, practice, and master topics of class 11 physics (NCERT) starti…

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Class 11 Physics (India): Mass swinging in a horizontal circle

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In this video David explains how to solve for the tension and speed of a mass swinging at an angle in a horizontal circle. Class 11 Physics…

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Class 11 Physics (India): Spring potential energy example (mistake in math)

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A spring, a frozen loop-d-loop and more! (See if you can find the mistake I made and get the right answer!) Class 11 Physics (India) Let's …

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Class 10 Physics (India): Lens formula

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Let's see how to use lens formula (1/v-1/u= 1/f) to locate images without having to draw ray diagrams. Created by Mahesh Shenoy Class 10 Ph…

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Class 11 Physics (India): Vector magnitude from initial & terminal points

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Example of finding the magnitude of a vector when what we're given about the vector is where it starts and where it ends. Class 11 Physics …

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Class 11 Physics (India) - Hindi: Mass swinging in a horizontal circle (Hindi)

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In this video Ram explains how to solve for the tension and speed of a mass swinging at an angle in a horizontal circle. Class 11 Physics (…

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Class 11 Physics (India): Analyzing scalar multiplication

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Sal analyzes the magnitude and direction of vectors that are a result of scalar multiplication of a vector whose magnitude is given. Class …

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Class 10 Physics (India): Refraction and Snell's law

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Refraction and Snell's Law Class 10 Physics (India) Let's explore the mysteries of light and electricity. From how light reflects to correc…

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Class 11 Physics (India): Worked example: distance and displacement from position-time graphs

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Worked examples finding displacement and distance from position-time graphs. Class 11 Physics (India) Let's learn, practice, and master top…