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: Harmonic motion part 2 (calculus) (Hindi)
We test whether Acos(wt) can describe the motion of the mass on a spring by substituting into the differential equation F=-kx. Class 11 Phy…
VideoFree12
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Class 11 Physics (India): Slope of a line secant to a curve
What is the slope of a line between two points on a curve? This is called a "secant" line. Class 11 Physics (India) Let's learn, practice, …
VideoFree7
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Class 11 Physics (India): Elastic and non elastic materials
Is steel more elastic than rubber? We all have some intuition for elastic and non-elastic materials. But how do we define elasticity? How d…
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Class 11 Physics (India) - Hindi: Displacement from time and velocity example (Hindi)
Worked example of calculating displacement from time and velocity. Class 11 Physics (India) - Hindi To help students who prefer to learn by…
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Class 10 Physics (India): Sign conventions for mirror (& lenses)
Let's explore the sign conventions (rules to assign +ve and -ve values) we use for mirrors and lenses. These rules are called Cartesian sig…
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Health and medicine: Risk factors for dementia
Visit us (http://www.khanacademy.org/science/healthcare-and-medicine) for health and medicine content or (http://www.khanacademy.org/test-p…
VideoFree6 minutes
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Health and medicine: Kawasaki disease: diagnosis and treatment
Kawasaki disease is diagnosed off the presence of symptoms rather than the results of tests. Symptoms include: conjunctivitis, rash, adenop…
VideoFree13 minutes
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Health and medicine: What is preload?
Some say Preload = End-Diastolic Pressure, others say Preload = End-Diastolic Volume, so which one is it? Watch and find out! Rishi is a pe…
VideoFree14 minutes
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Health and medicine: What is polycythemia vera?
Learn to recognize the symptoms of polycythemia vera as well as how to diagnosis and treat it. By Raja Narayan. Visit us (http://www.khanac…
VideoFree11 minutes
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Health and medicine: Diagnosing malaria
Visit us (http://www.khanacademy.org/science/healthcare-and-medicine) for health and medicine content or (http://www.khanacademy.org/test-p…
VideoFree8 minutes
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Health and medicine: What is blood pressure?
Find out what a systolic and diastolic blood pressure mean. Rishi is a pediatric infectious disease physician and works at Khan Academy. He…
VideoFree6 minutes
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Health and medicine: Vaccines and the autism myth - part 2
The infamous Wakefield study kickstarted the Autism Myth, but many studies have since shown that there is no link between the MMR Vaccine a…
VideoFree9 minutes
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Class 11 Physics (India): Multiplying and dividing with significant figures
Learn to multiply and divide with significant figures. Class 11 Physics (India) Let's learn, practice, and master topics of class 11 physic…
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Class 12 Physics (India): Magnetic force on a proton example (part 2)
Sal determines the radius of the circle traveled by the proton in the previous example by using the formula for centripetal acceleration. C…
VideoFree11 minutes
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Class 11 Physics (India): Stellar distance using parallax
Stellar Distance Using Parallax Class 11 Physics (India) Let's learn, practice, and master topics of class 11 physics (NCERT) starting with…
VideoFree12 minutes