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: Earth's magnetic field (how to measure)
How can we describe the strength of the Earth's magnetic field using a magnet and a compass? What does this tell us? Physics Learn about th…
VideoFree1 minute
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Class 11 Physics (India): Average velocity and speed worked example
Sal solves a word problem to find average velocity and speed of an object in one-dimension. Class 11 Physics (India) Let's learn, practice,…
VideoFree5
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Class 11 Physics (India) - Hindi: Ball hits rod angular momentum example (Hindi)
In this video Ram explains how a mass can have angular momentum even if it is traveling along a straight line. Then Ram shows how to solve …
VideoFree17
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Physics: Parabolic mirrors 2
Parabolic Mirrors 2 Physics Learn about the basic principles that govern the physical world around us. Solid understanding of algebra and a…
VideoFree13 minutes
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Organic chemistry: Nomenclature and properties of amides
How to name amides and the physical properties of acetamide. Organic chemistry Sal and Jay cover topics covered in college organic chemistr…
VideoFree9 minutes
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Class 11 Physics (India): Intro to slope
Sal shows how to find the slope of a line. Class 11 Physics (India) Let's learn, practice, and master topics of class 11 physics (NCERT) st…
VideoFree7
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Class 11 Physics (India) - Hindi: Specific gravity (Hindi)
In this video Ram explains what specific gravity means. He also shows how to calculate the value for specific gravity and use it to determi…
VideoFree14
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Health and medicine: How white blood cells move around
Health and medicine The medical world can be a confusing place. Patients, their families, and even students entering health fields might fe…
VideoFree9 minutes
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Class 11 Physics (India): Vector components from magnitude & direction
Sal finds the components of a couple of vectors given in magnitude and direction form. Class 11 Physics (India) Let's learn, practice, and …
VideoFree10
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Class 11 Physics (India): Derivation of beat frequency formula
In this video David derives the formula for beat frequency. Class 11 Physics (India) Let's learn, practice, and master topics of class 11 p…
VideoFree10 minutes
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Class 10 Physics (India): Virtual image
Virtual Image Class 10 Physics (India) Let's explore the mysteries of light and electricity. From how light reflects to correcting defects …
VideoFree8 minutes
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Class 12 Physics (India): Exponential decay formula proof (can skip, involves calculus)
Showing that N(t)=Ne^(-kt) describes the amount of a radioactive substance we have at time T. For students with background in Calculus. Not…
VideoFree12 minutes
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Chemistry: The periodic table - classification of elements
Definitions of groups, periods, alkali metals, alkaline earth metals, halogens, and noble gases. How metals, non-metals, and metalloids can…
VideoFree9 minutes
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Class 11 Physics (India) - Hindi: More on Newton's second law (Hindi)
In this video Ram explains how to use Newton's second law when dealing with multiple forces, forces in two dimensions, and diagonal forces.…
VideoFree19
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Health and medicine: Contractility, Ea, and preload effects on PV boxes
See how contractility, Ea (arterial elastance), and preload each have an effect on PV Boxes. Rishi is a pediatric infectious disease physic…
VideoFree13 minutes