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 …
check_box_outline_blank
Health and medicine: Regulation of blood pressure with baroreceptors
Learn about how the arteries use nerve impulses to help regulate blood pressure. Rishi is a pediatric infectious disease physician and work…
VideoFree12 minutes
check_box_outline_blank
Class 11 Physics (India): More on internal energy
Getting more intuition of internal energy, heat, and work. Examples of using the first law to calculate work. Class 11 Physics (India) Let'…
VideoFree14 minutes
check_box_outline_blank
Health and medicine: Muscle stretch reflex
Health and medicine The medical world can be a confusing place. Patients, their families, and even students entering health fields might fe…
VideoFree10 minutes
check_box_outline_blank
Class 11 Physics (India) - Hindi: Yo yo in vertical circle example (Hindi)
In this video Ram explains how to find the tension in a string that is whirling a yo-yo in a vertical circle. Class 11 Physics (India) - Hi…
VideoFree11
check_box_outline_blank
Class 12 Physics (India): Conservation of charge
Charge can't be created, and it can't be destroyed Class 12 Physics (India) It is now time to dive deeper into the world of physics with to…
VideoFree9 minutes
check_box_outline_blank
Class 11 Physics (India) - Hindi: Impulse and momentum pillow-fight example (Hindi)
In this video, Ram shows how to solve for the impulse and force applied during a dodgeball collision using the impulse-momentum relationshi…
VideoFree11
check_box_outline_blank
Chemistry: Introduction to ions
Difference between ions and atoms. How to calculating charge on an ion. Chemistry Did you know that everything is made out of chemicals? Ch…
VideoFree7 minutes
check_box_outline_blank
Health and medicine: Risk factors for drug use and drug abuse
Visit us (http://www.khanacademy.org/science/healthcare-and-medicine) for health and medicine content or (http://www.khanacademy.org/test-p…
VideoFree12 minutes
check_box_outline_blank
Class 11 Physics (India): Vector magnitude from graph
Sal finds the magnitude of a vector given its graph. Class 11 Physics (India) Let's learn, practice, and master topics of class 11 physics …
VideoFree4
check_box_outline_blank
Class 11 Physics (India): Two masses hanging from a pulley
In this video David explains how to find the acceleration of two masses hanging from a pulley (using the easy method). Class 11 Physics (In…
VideoFree9 minutes
check_box_outline_blank
Class 12 Physics (India): Magnifying power of telescope
Let's figure out the magnifying power (magnification) of our telescope. Class 12 Physics (India) It is now time to dive deeper into the wor…
VideoFree7
check_box_outline_blank
Chemistry: Concentration cell
Concentration cells are galvanic (or voltaic) cells made of two half-cells, each of which containing the same electrodes, but different con…
VideoFree10 minutes
check_box_outline_blank
Class 11 Physics (India): Introduction to minimum and maximum points
Sal explains all about minimum and maximum points, both absolute and relative. Class 11 Physics (India) Let's learn, practice, and master t…
VideoFree6
check_box_outline_blank
Chemistry: Balancing another combustion reaction
Balancing the combustion reaction of ethane, C₂H₆ Chemistry Did you know that everything is made out of chemicals? Chemistry is the study o…
VideoFree5 minutes
check_box_outline_blank
Class 11 Physics (India) - Hindi: Constant angular momentum when no net torque (Hindi)
Just like how linear momentum is constant when there's no net force, angular momentum is constant where there's no net torque. Class 11 Phy…
VideoFree7