the work done against friction
71Knights of the Dinner Table — (KoDT) is a comic book/strip created by Jolly R. Blackburn[1][2] and published by Kenzer Company. It primarily focuses on a group of role playing gamers and their actions at the gaming table, which often result in unfortunate, but humorous… …
72Alexander the Great — 356 323 B.C., king of Macedonia 336 323: conqueror of Greek city states and of the Persian empire from Asia Minor and Egypt to India. * * * or Alexander III born 356 BC, Pella, Macedonia died June 13, 323 BC, Babylon King of Macedonia (336–323)… …
73Sailing faster than the wind — Devices that are powered by sails (such as sailboats, iceboats and sand yachts) can sail (that is, advance over the surface) faster than the wind.[1] Such devices cannot do this when sailing dead downwind using simple square sails that are set… …
74Roman Catholicism — the faith, practice, and system of government of the Roman Catholic Church. [1815 25] * * * Largest single Christian denomination in the world, with some one billion members, or about 18% of the world s population. The Roman Catholic church has… …
75Simple machine — This article is about the concept in physics. For the Internet forum software, see Simple Machines Forum. Table of simple mechanisms, from Chambers Cyclopedia, 1728.[1] Simple machines provide a vocabulary for understanding more complex machine …
76India — /in dee euh/, n. 1. Hindi, Bharat. a republic in S Asia: a union comprising 25 states and 7 union territories; formerly a British colony; gained independence Aug. 15, 1947; became a republic within the Commonwealth of Nations Jan. 26, 1950.… …
77Nobel Prizes — ▪ 2009 Introduction Prize for Peace The 2008 Nobel Prize for Peace was awarded to Martti Ahtisaari, former president (1994–2000) of Finland, for his work over more than 30 years in settling international disputes, many involving ethnic,… …
78Force — For other uses, see Force (disambiguation). See also: Forcing (disambiguation) Forces are also described as a push or pull on an object. They can be due to phenomena such as gravity, magnetism, or anything that might cause a mass to accelerate …
79Perpetual motion — For other uses, see Perpetual motion (disambiguation). Robert Fludd s 1618 water screw perpetual motion machine from a 1660 wood engraving. This device is widely credited as the first recorded attempt to describe such a device in order to produce …
80mechanics — /meuh kan iks/, n. 1. (used with a sing. v.) the branch of physics that deals with the action of forces on bodies and with motion, comprised of kinetics, statics, and kinematics. 2. (used with a sing. v.) the theoretical and practical application …
