Floating Exchange Effect on US. Created by Sal Khan.
Floating Exchange Resolving Trade Imbalance. Created by Sal Khan.
See how energy flows and matter is recycled in ecosystems.
The fluid mosaic model describes the cell membrane as a tapestry of several types of molecules (phospholipids, cholesterols, and proteins) that are constantly moving. This movement helps the cell membrane maintain its role as a barrier between the inside and outside of the cell environments.
Introduction and intuition for flux and magnetic flux.
What happens if we change the distance between our aperture and image plane?
What's the different between a wind force and the force due to gravity? This video covers both Newton's second law of motion and law of gravity.
Formal and informal powers of the US president.
Learn how to calculate interest when interest is compounded continually. We compare the effects of compounding more than annually, building up to interest compounding continually. Created by Sal Khan.
Forward Contract Introduction. Created by Sal Khan.
Economists traditionally divide the factors of production into four categories: land, labor, capital, and entrepreneurship. Land refers to natural resources, labor refers to work effort, and capital is anything made that is used to make something else. The last resource, entrepreneurship, refers to the ability to put the other three resources together to create value. In this video, we define each of the four factors of production and provide examples of each.
An introduction to Gravity, Weak, Electromagnetic and Strong Forces. Created by Sal Khan.
The Fourier Series allows us to model any arbitrary periodic signal with a combination of sines and cosines. In this video sequence Sal works out the Fourier Series of a square wave. Created by Sal Khan.
Fourier coefficients for cosine terms. Created by Sal Khan.
Fourier coefficients for sine terms. Created by Sal Khan.
An overview of The Fourteenth Amendment and equal protection.
Understanding the weak points of Fractional Reserve Banking. Created by Sal Khan.
Sal draws a free body diagram for a box held stationary against a wall with a force at an angle theta.
Walk through the solution to a free response question (FRQ) like the ones you may see on an AP Microeconomics exam. Topics include why price equals marginal revenue (P=MR) for a perfectly competitive firm, how to draw side-by-side market and firm graphs, and how to find several points of interest in the firm graph.
Part 1 of the French Revolution. From the Convocation of the Estates General to the storming of the Bastille.