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Commercial speech. In law, commercial speech is speech or writing on behalf of a business with the intent of earning revenue or a profit. It is economic in nature and usually attempts to persuade consumers to purchase the business's product or service. The Supreme Court of the United States defines commercial speech as speech that "proposes a ...
Simple machine. The six classical simple machines. A simple machine is a mechanical device that changes the direction or magnitude of a force. [1] In general, they can be defined as the simplest mechanisms that use mechanical advantage (also called leverage) to multiply force. [2] Usually the term refers to the six classical simple machines ...
United States free speech exceptions. In the United States, some categories of speech are not protected by the First Amendment. According to the Supreme Court of the United States, the U.S. Constitution protects free speech while allowing limitations on certain categories of speech. [ 1] Categories of speech that are given lesser or no ...
Examples of rope and pulley systems illustrating mechanical advantage. Consider lifting a weight with rope and pulleys. A rope looped through a pulley attached to a fixed spot, e.g. a barn roof rafter, and attached to the weight is called a single pulley. It has a mechanical advantage (MA) = 1 (assuming frictionless bearings in the pulley ...
A Rube Goldberg machine, named after American cartoonist Rube Goldberg, is a chain reaction –type machine or contraption intentionally designed to perform a simple task in an indirect and (impractically) overly complicated way. Usually, these machines consist of a series of simple unrelated devices; the action of each triggers the initiation ...
There is no simple solution or algorithm or set of hard and fast rules that govern this, and the idea that Elon seems to either assume there is or, propose one be drawn up, is the first sign that ...
The wheel and axle is a simple machine consisting of a wheel attached to a smaller axle so that these two parts rotate together in which a force is transferred from one to the other. The wheel and axle can be viewed as a version of the Lever, with a drive force applied tangentially to the perimeter of the wheel, and a load force applied to the ...
A rope and pulley system—that is, a block and tackle—is characterised by the use of a single continuous rope to transmit a tension force around one or more pulleys to lift or move a load—the rope may be a light line or a strong cable. This system is included in the list of simple machines identified by Renaissance scientists. [10] [11]