Examlex
A piano wire has a length of 81 cm and a mass of 2.0 g. If its fundamental frequency is to be 394 Hz, it tension must be:
Factory System
A method of manufacturing using machinery and division of labor, characteristic of the Industrial Revolution, which replaced the traditional artisan workshops.
Textiles
Materials that are woven or knitted, typically used for making clothes and other objects.
Ironworks
A place where iron is smelted, forged, or processed into finished products.
Cotton Gin
Invented by Eli Whitney in 1793, the machine that separated cotton seed from cotton fiber, speeding cotton processing and making profitable the cultivation of the more hardy, but difficult to clean, short-staple cotton; led directly to the dramatic nineteenth-century expansion of slavery in the South.
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