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 12 Physics (India): Electric potential energy of charges
In this video David explains how to find the electric potential energy for a system of charges and solves an example problem to find the sp…
VideoFree14 minutes
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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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Class 12 Physics (India): Transistor current and parameters
Let's explore the names of the currents through the transistor, find the connection between them and talk about transistor parameters. Thes…
VideoFree10
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Health and medicine: Testing for the flu
Learn when testing for influenza makes sense, and the most common test that is used. Rishi is a pediatric infectious disease physician and …
VideoFree9 minutes
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Organic chemistry: Cyclic ethers and epoxide naming
Cyclic ethers and epoxide naming. Organic chemistry Sal and Jay cover topics covered in college organic chemistry course. Basic understandi…
VideoFree8 minutes
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Physics: Question 1c: 2015 AP Physics 1 free response
Impact of adding a third mass to our string-pulley system. Physics Learn about the basic principles that govern the physical world around u…
VideoFree9 minutes
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Health and medicine: Hemoglobin moves O2 and CO2
Learn the two ways that oxygen moves from the lungs to the tissues, and the three ways that carbon dioxide returns from the tissues to the …
VideoFree15 minutes
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Physics: Electrode (distance test)
Does the distance between the copper and zinc electrodes matter? What happens to the deflection when we hold them close vs. far apart? Why …
VideoFree1 minute
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Health and medicine: Introduction to neural cell types
This video provides an introduction to the cell types of the nervous system. By Matt Jensen. Health and medicine The medical world can be a…
VideoFree4 minutes
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Health and medicine: Shock - oxygen delivery and metabolism
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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Electrical engineering: Demo: ant bot
demonstration of a basic ant bot Electrical engineering Learn about electricity, circuit theory, and introductory electronics. We also have…
VideoFree1 minute
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Organic chemistry: Introduction to infrared spectroscopy
Basic principles of spectroscopy. Light absorption and bond vibration. Organic chemistry Sal and Jay cover topics covered in college organi…
VideoFree9 minutes
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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): Doppler effect: reflection off a moving object
Does the doppler effect still apply when sound is being reflected off a moving object? Class 11 Physics (India) Let's learn, practice, and …
VideoFree8 minutes
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Class 12 Physics (India): Analyzing a resistor circuit with two batteries
An example of simplifying a seemingly complicated resistor circuit Class 12 Physics (India) It is now time to dive deeper into the world of…
VideoFree10 minutes