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(Encyclopedia)
CE5
Centripetal and centrifugal forces: When a ball is swung in a circle at the end of a string, centripetal and centrifugal forces act as shown above.
centripetal force and centrifugal force, act...
(Encyclopedia) hedgehog, Old World insectivorous mammal of the family Erinaceidae.
The spiny hedgehogs are found in Africa and Eurasia, except SE Asia. They have rounded bodies up to 13 in. (33 cm) long, very short ...
(Encyclopedia) Agnelli än-yĕlˈlē [key], family of Italian industrialists.
Giovanni Agnelli, 1866–1945, served as a cavalry officer until 1892. One of the founders (1899) of Fiat (Fabbrica Italiana Automobili T...
(Encyclopedia)
CE5
Equilibrium
equilibrium, state of balance. When a body or a system is in equilibrium, there is no net tendency to change. In mechanics, equilibrium has to do with the forces acting on a body. ...
(Encyclopedia)
CE5
A regulation baseball field. Minimum distance to the outfield fence is 250 ft; professional baseball fields constructed since 1958 have been at least 325 ft deep along the foul lines and 400 ft...
(Encyclopedia) Balfour, Arthur James Balfour, 1st earl of bălˈfo͝or [key], 1848–1930, British statesman; nephew of the 3d marquess of Salisbury. He entered parliament as a Conservative in 1874 and served as sec...
(Encyclopedia) bicycle, light, two-wheeled vehicle driven by pedals. The name velocipede is often given to early forms of the bicycle and to its predecessor, the dandy horse, a two-wheeled vehicle moved by the thrus...
(Encyclopedia) Theseus thēˈsyo͞os, –sēəs [key], in Greek mythology, hero of Athens; son of either King Aegeus or Poseidon. Before Aegeus left Troezen he placed his sword and sandals beneath a huge rock and to...
(Encyclopedia) pipe, hollow structure, usually cylindrical, for conducting materials. It is used primarily to convey liquids, gases, or solids suspended in a liquid, e.g., a slurry. It is also used as a conduit for ...
(Encyclopedia) Winchester wĭnˈchĕˌstər, wĭnˈchĭstər [key]. 1 Town (1990 pop. 11,524), Litchfield co., NW Conn., in the Litchfield Hills; settled 1732, inc. 1771. It includes Winsted (1990 pop. 8,254), an in...