A concentration gradient occurs when the concentration of particles is higher in …
A concentration gradient occurs when the concentration of particles is higher in one area than another. In passive transport, particles will diffuse down a concentration gradient, from areas of higher concentration to areas of lower concentration, until they are evenly spaced.
The outcomes in US Congressional elections are affected by the incumbency advantage …
The outcomes in US Congressional elections are affected by the incumbency advantage phenomenon, open and closed primaries, caucuses, and general elections.
When Columbus arrived in the Caribbean, he met the Taino people. In …
When Columbus arrived in the Caribbean, he met the Taino people. In this video, Kim explores the consequences of Columbus's voyage for the Taino people, as well as the changes wrought in Europe by Spain's New World exploits.
A conservative force exists when the work done by that force on …
A conservative force exists when the work done by that force on an object is independent of the object's path. Instead, the work done by a conservative force depends only on the end points of the motion. An example of a conservative force is gravity. Created by David SantoPietro.
An interesting case of price elasticity of demand is a demand curve …
An interesting case of price elasticity of demand is a demand curve with a constant unit elasticity. Explore what such a demand curve would look like in this video. Created by Sal Khan.
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