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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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Physics: Loop de loop answer part 2

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Figuring out the car's average speed while completing the loop de loop Physics Learn about the basic principles that govern the physical wo…

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Health and medicine: How HIV kills so many CD4 T cells

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Visit us (http://www.khanacademy.org/science/healthcare-and-medicine) for health and medicine content or (http://www.khanacademy.org/test-p…

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Health and medicine: Vocal cord growths

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Health and medicine The medical world can be a confusing place. Patients, their families, and even students entering health fields might fe…

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Class 11 Physics (India): Differentiating products

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Sal differentiates eˣcos(x) using the product rule. Class 11 Physics (India) Let's learn, practice, and master topics of class 11 physics (…

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

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Identifying forces or force components acting as the centripetal force for a car driving in a horizontal circle, a car driving in a vertica…

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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) - Hindi: Constructive and Destructive interference (Hindi)

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In this video Ram explains how Noise canceling headphones work using constructive and destructive interference. Class 11 Physics (India) - …

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Class 11 Physics (India): Introduction to partial pressure

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Definition of partial pressure and Dalton's law of partial pressure. Example of calculating partial pressure of a gas in a mixture from the…

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Health and medicine: Pharyngitis

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Health and medicine The medical world can be a confusing place. Patients, their families, and even students entering health fields might fe…

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Physics: Thin lens equation and problem solving

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Some examples of using the thin lens equation Physics Learn about the basic principles that govern the physical world around us. Solid unde…

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Health and medicine: Asbestosis, silicosis, sick building syndrome

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Health and medicine The medical world can be a confusing place. Patients, their families, and even students entering health fields might fe…

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Health and medicine: Alzheimer's disease and Korsakoff's syndrome

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Learn about how Alzheimer's Disease and Korsakoff's Syndrome affect memory. Health and medicine The medical world can be a confusing place.…

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Organic chemistry: Halohydrin formation

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Reaction of an alkene with a diatomic halogen and water, converting the double bond to a single bond with halogen and hydroxyl substituents…

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Electrical engineering: Mesh current method (steps 1 to 3)

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We solve a circuit by writing Kirchhoff's Voltage Law in terms of "mesh currents." This video covers the first three steps out of four. Ele…

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Class 11 Physics (India) - Hindi: Definition of Amplitude and Period (Hindi)

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Ram defines the terms amplitude and period for simple harmonic motion and shows how to find them on a graph. Class 11 Physics (India) - Hin…