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): Harmonic motion part 2 (calculus)
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 Phys…
VideoFree10 minutes
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Health and medicine: Temporal arteritis
Temporal arteritis (otherwise known as giant-cell arteritis) is a type of vasculitis that affects medium to large arteries in the head. Pat…
VideoFree10 minutes
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Class 11 Physics (India): Definite integral as the limit of a Riemann sum
Definite integrals represent the exact area under a given curve, and Riemann sums are used to approximate those areas. However, if we take …
VideoFree4
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Class 12 Physics (India): Electric field definition
In this video David explains why physicists came up with the idea of the electric field, how it's useful, and explains how the electric fie…
VideoFree14 minutes
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Chemistry: Using the Arrhenius equation
How to use the Arrhenius equation to calculate the activation energy. Chemistry Did you know that everything is made out of chemicals? Chem…
VideoFree11 minutes
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Class 10 Physics (India): Convex mirror & applications
When curved mirrors have a reflecting surface on the outside, they are called convex mirrors. (vex stands for bulging out). Let's learn wha…
VideoFree13
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Class 11 Physics (India): Production of sound
Sound is vibrating air. But how does the air start vibrating? Class 11 Physics (India) Let's learn, practice, and master topics of class 11…
VideoFree4 minutes
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Class 12 Physics (India): Writing nuclear equations for alpha, beta, and gamma decay
Writing nuclear equations for alpha, beta, and gamma decay. Class 12 Physics (India) It is now time to dive deeper into the world of physic…
VideoFree8 minutes
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Electrical engineering: What is inside a universal remote control?
In this video we explore what is inside a universal remote control, how it is made, and how it works. Electrical engineering Learn about el…
VideoFree7 minutes
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Class 11 Physics (India) - Hindi: Normal force and contact force (Hindi)
The force that keeps a block of ice from falling towards the center of the earth. Class 11 Physics (India) - Hindi To help students who pre…
VideoFree7
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Class 11 Physics (India): Worked examples: Definite integral properties 2
Sal evaluates definite integrals of functions given their graphs. He does so using various properties of integrals. Class 11 Physics (India…
VideoFree5
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Chemistry: Rate law and reaction order
Using method of initial rates to determine the order of a reaction. Chemistry Did you know that everything is made out of chemicals? Chemis…
VideoFree11 minutes
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Class 11 Physics (India) - Hindi: Examples interpreting position time graphs (Hindi)
Using position-time graphs and number lines to find displacement and distance traveled. Class 11 Physics (India) - Hindi To help students w…
VideoFree12
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Class 11 Physics (India) - Hindi: Solving elastic collision problems the hard way (Hindi)
In this video, Ram shows how to solve elastic problems the hard way. In other words, using conservation of momentum and conservation of kin…
VideoFree17
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Electrical engineering: Spout switches
Electrical engineering Learn about electricity, circuit theory, and introductory electronics. We also have sections that let you get down a…
VideoFree10 minutes