Learn about how to represent a monopoly market graphically in this video. Topics covered include the profit-maximizing quantity, pricing decisions, and deadweight loss associated with monopolies.
An important skill in microeconomics is the ability to find a firm's profit. Learn more about how to use a graph to identify the profit-maximizing quantity for a firm in a perfectly competitive market, and identify the area that represents the firm's profit or loss.
Accounting profit is what many people tend to think of when they think profit, but an economist would say that you leave something very important out when you do so: opportunity costs. In this video, explore the difference between a firm's accounting and economic profit. Created by Sal Khan.
Economics of a simple business leading up to a discussion on inflation/deflation. Touching on income statements. Created by Sal Khan.
Economies of scale exist when long run average total cost decreases as output increases, diseconomies of scale occur when long run average total cost increases as output increases, and constant returns to scale occur when costs do not change as output increases.
Introduction to ecosystems. How land ecosystems are classified into biomes.
Education as a force of convergence. A discussion with Sal Khan.
Overview of this lesson.
Why we calculate percent changes in a strange way when calculating elasticities. Created by Sal Khan.
Thinking about elasticity of supply. Created by Sal Khan.
How we elect our President in the United States. Created by Sal Khan.
Sal shows that there will be a net torque on a loop of current in a wire. Sal shows that this net torque will cause the loop to rotate. Created by Sal Khan.
Sal shows that a commutator can be used in order to keep the loop of wire rotating in the magnetic field. Created by Sal Khan.
Sal finishes the explanation of how a commutator will allow a loop of wire to continue spinning in a magnetic field, thereby allowing it to work as an electric motor. Created by Sal Khan.
Introduction to electric potential energy. Created by Sal Khan.
How a cell can use a molecule's electrochemical gradient to power secondary active transport.
Common elemental building blocks of biological molecules: Carbon, Oxygen, Hydrogen, Nitrogen and Phosphorus.
How elements relate to atoms. The basics of how protons, electrons, and neutrons make up an atom. Created by Sal Khan.
An emf induced by motion relative to a magnetic field is called a motional emf. This is represented by the equation emf = LvB, where L is length of the object moving at speed v relative to the strength of the magnetic field B.
Starting with the reign of Augustus and ending with the reign of Marcus Aurelius, the Pax Romana is a relatively stable 200 year period. The first five emperors are of the Julio-Claudia Dynasty. The last five of the Pax Romana are considered the "good" emperors by Machiavelli.