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
Chemistry: Introduction to entropy
Introduction to entropy, and how entropy relates to the number of possible states for a system. Chemistry Did you know that everything is m…
VideoFree7 minutes
check_box_outline_blank
Health and medicine: Hepatic lobule
Health and medicine The medical world can be a confusing place. Patients, their families, and even students entering health fields might fe…
VideoFree3 minutes
check_box_outline_blank
Chemistry: Standard cell potential and the equilibrium constant
Finding the relationship between standard cell potential and equilibrium constant K. Chemistry Did you know that everything is made out of …
VideoFree5 minutes
check_box_outline_blank
Class 11 Physics (India): Secant line with arbitrary difference
Sal finds the slope of the secant line on the graph of ln(x) between the points (2,ln2) and (2+h,ln(2+h)). Class 11 Physics (India) Let's l…
VideoFree4
check_box_outline_blank
Health and medicine: Treatment of dementia and Alzheimer's disease
Visit us (http://www.khanacademy.org/science/healthcare-and-medicine) for health and medicine content or (http://www.khanacademy.org/test-p…
VideoFree6 minutes
check_box_outline_blank
Physics: AP Physics 1 review of Torque and Angular momentum
In this video, David quickly explains each torque and angular concept and does a sample question for each one. Physics Learn about the basi…
VideoFree20 minutes
check_box_outline_blank
Electrical engineering: Batteries/power
In this video we install 8 AA batteries in Bit-zee's frame using zip ties. Electrical engineering Learn about electricity, circuit theory, …
VideoFree2 minutes
check_box_outline_blank
Class 11 Physics (India) - Hindi: More on Newton's third law (Hindi)
Ram explains some of the common misconceptions in dealing with Newton's Third Law. He also shows how to correctly and reliably identify Thi…
VideoFree13
check_box_outline_blank
Health and medicine: Transposition of great arteries
Health and medicine The medical world can be a confusing place. Patients, their families, and even students entering health fields might fe…
VideoFree5 minutes
check_box_outline_blank
Class 11 Physics (India): Limits by factoring
Sal finds the limit of (x²+x-6)/(x-2) at x=2 by factoring and simplifying the expression. Class 11 Physics (India) Let's learn, practice, a…
VideoFree6
check_box_outline_blank
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
check_box_outline_blank
Class 11 Physics (India): Ice accelerating down an incline
Figuring out the acceleration of ice down a plane made of ice Class 11 Physics (India) Let's learn, practice, and master topics of class 11…
VideoFree11 minutes
check_box_outline_blank
Organic chemistry: Nucleophilicity vs. basicity
Nucleophilicity vs. Basicity . The difference between what it means to be a nucleophile and a base Organic chemistry Sal and Jay cover topi…
VideoFree13 minutes
check_box_outline_blank
Organic chemistry: Conformations of ethane
How to represent the staggered and eclipsed conformations of ethane Organic chemistry Sal and Jay cover topics covered in college organic c…
VideoFree10 minutes
check_box_outline_blank
Class 11 Physics (India): Four fundamental forces
Gravity, Weak, Electromagnetic and Strong Class 11 Physics (India) Let's learn, practice, and master topics of class 11 physics (NCERT) sta…
VideoFree10 minutes