The density, or more the volumetric mass density, of a substance is its mass per unit volume. The symbol most used for density is ρ, although the Latin letter D can be used. Mathematically, density is defined as mass divided by volume: ρ = m V where ρ is the density, m is the mass, V is the volume. In some cases, density is loosely defined as its weight per unit volume, although this is scientifically inaccurate – this quantity is more called specific weight. For a pure substance the density has the same numerical value as its mass concentration. Different materials have different densities, density may be relevant to buoyancy and packaging. Osmium and iridium are the densest known elements at standard conditions for temperature and pressure but certain chemical compounds may be denser. To simplify comparisons of density across different systems of units, it is sometimes replaced by the dimensionless quantity "relative density" or "specific gravity", i.e. the ratio of the density of the material to that of a standard material water.
Thus a relative density less than one means. The density of a material varies with pressure; this variation is small for solids and liquids but much greater for gases. Increasing the pressure on an object decreases the volume of the object and thus increases its density. Increasing the temperature of a substance decreases its density by increasing its volume. In most materials, heating the bottom of a fluid results in convection of the heat from the bottom to the top, due to the decrease in the density of the heated fluid; this causes it to rise relative to more dense unheated material. The reciprocal of the density of a substance is called its specific volume, a term sometimes used in thermodynamics. Density is an intensive property in that increasing the amount of a substance does not increase its density. In a well-known but apocryphal tale, Archimedes was given the task of determining whether King Hiero's goldsmith was embezzling gold during the manufacture of a golden wreath dedicated to the gods and replacing it with another, cheaper alloy.
Archimedes knew that the irregularly shaped wreath could be crushed into a cube whose volume could be calculated and compared with the mass. Baffled, Archimedes is said to have taken an immersion bath and observed from the rise of the water upon entering that he could calculate the volume of the gold wreath through the displacement of the water. Upon this discovery, he leapt from his bath and ran naked through the streets shouting, "Eureka! Eureka!". As a result, the term "eureka" entered common parlance and is used today to indicate a moment of enlightenment; the story first appeared in written form in Vitruvius' books of architecture, two centuries after it took place. Some scholars have doubted the accuracy of this tale, saying among other things that the method would have required precise measurements that would have been difficult to make at the time. From the equation for density, mass density has units of mass divided by volume; as there are many units of mass and volume covering many different magnitudes there are a large number of units for mass density in use.
The SI unit of kilogram per cubic metre and the cgs unit of gram per cubic centimetre are the most used units for density. One g/cm3 is equal to one thousand kg/m3. One cubic centimetre is equal to one millilitre. In industry, other larger or smaller units of mass and or volume are more practical and US customary units may be used. See below for a list of some of the most common units of density. A number of techniques as well as standards exist for the measurement of density of materials; such techniques include the use of a hydrometer, Hydrostatic balance, immersed body method, air comparison pycnometer, oscillating densitometer, as well as pour and tap. However, each individual method or technique measures different types of density, therefore it is necessary to have an understanding of the type of density being measured as well as the type of material in question; the density at all points of a homogeneous object equals its total mass divided by its total volume. The mass is measured with a scale or balance.
To determine the density of a liquid or a gas, a hydrometer, a dasymeter or a Coriolis flow meter may be used, respectively. Hydrostatic weighing uses the displacement of water due to a submerged object to determine the density of the object. If the body is not homogeneous its density varies between different regions of the object. In that case the density around any given location is determined by calculating the density of a small volume around that location. In the limit of an infinitesimal volume the density of an inhomogeneous object at a point becomes: ρ = d m / d V, where d V is an elementary volume at position r; the mass of the body t
Tarija is a department in Bolivia. It is located in south-eastern Bolivia bordering with Argentina to the south and Paraguay to the east. According to the 2012 census, it has a population of 482,196 inhabitants, it has an area of 37,623 km2. The city of Tarija is the capital of the department; the department is divided into five provinces and one autonomous region: Gran Chaco Province Aniceto Arce Province José María Avilés Province Cercado Province Eustaquio Méndez Province Burdett O'Connor ProvinceNotable places in Tarija include: Villamontes in the department's oil-producing eastern scrubland Bermejo, a border town adjoining Aguas Blancas, Argentina Yacuiba, a border town with Argentina. The Department of Tarija is renowned for its mild, pleasant climate, comprises one of the country's foremost agricultural regions, its citizens have traditionally felt close to, conducted a lively international trade with, neighboring towns of northern Argentina. Between 1816-1898, the region was part of Argentina, was ceded to Bolivia in exchange for Puna de Atacama.
Tarija boasts South America's second-largest natural gas reserves. Increased gas revenues and foreign direct investment in gas exploration and distribution are fueling growth and turning Tarija into Bolivia's next industrial hub. Political instability at the national level has hindered development of the reserves, as the region has chosen to align with pro-autonomy forces which aim at the devolution of considerable powers away from the central government in favor of the departments. More than 20 different indigenous tribes, ranging in population from 20 persons up to 1500, live in the region; the Guaraní is the largest tribe. Important battles and events related to the 1932-35 Chaco War with Paraguay took place in the department's eastern dry lands. Tarija was the home of Víctor Paz Estenssoro, leader of the 1952 Bolivian Revolution and four-time Constitutional President; the main economic activity is the wine industry. The land and climate are ideal for wine production; the city of Tarija holds an annual Festival of Cheese.
The petroleum industry is important not only for the region but for the country as a whole the gas industry, exported to Argentina and Brazil. The autonomous region of Gran Chaco is from; the languages spoken in the department are Spanish, Quechua and Guaraní. The following table shows the numbers belonging to the recognized groups of speakers. Aguaragüe National Park and Integrated Management Natural Area Cordillera de Sama Biological Reserve Tariquía Flora and Fauna National Reserve "Tarija", Travel Guide Weather in Tarija Bolivian Music and Web Varieties Full information of Tarija Department
Municipalities of Bolivia
Municipalities in Bolivia are administrative divisions of the entire national territory governed by local elections. Municipalities are the third level of administrative divisions, below provinces; some of the provinces consist of only one municipality. In these cases the municipalities are identical to the provinces. Municipalities in Bolivia are each led by an executive office. Mayors were appointed by the national government from 1878 to 1942 and from 1949 to 1987. Local elections were held under the 1942 municipal code, in force until 1991; the 1985 Organic Law of Municipalities restored local elections for mayor and created a legislative body, the municipal council. In 1994, the entire territory of Bolivia was merged into municipalities, where only urban areas were organized as municipalities; as an effect of decentralization through the 1994 Law of Popular Participation the number of municipalities in Bolivia has risen from an initial twenty-four to 327, to 337, to 339. Of the 327 municipalities existing after 2005, 187 are inhabited by indigenous population.
New municipalities must have 5,000 in the case of border areas. The municipalities are as follows ordered by department: Baures Municipality Exaltación Municipality Guayaramerín Municipality Huacaraje Municipality Loreto Municipality, Beni Magdalena Municipality, Beni Puerto Siles Municipality Reyes Municipality Riberalta Municipality Rurrenabaque Municipality San Andrés Municipality, Beni San Borja Municipality San Ignacio Municipality, Beni San Javier Municipality, Beni San Joaquín Municipality, Beni San Ramón Municipality, Beni Santa Ana Municipality, Beni Santa Rosa Municipality, Beni Trinidad Municipality, Beni Aiquile Municipality Alalay Municipality Anzaldo Municipality Arani Municipality Arbieto Municipality Arque Municipality Ayopaya Municipality Bolívar Municipality, Cochabamba Capinota Municipality Chimoré Municipality Cliza Municipality Cocapata Municipality Cochabamba Municipality Colcapirhua Municipality Colomi Municipality Cuchumuela Municipality Entre Ríos Municipality, Cochabamba Mizque Municipality Morochata Municipality Muela Municipality Omereque Municipality Pasorapa Municipality Pocona Municipality Pojo Municipality Puerto Villarroel Municipality Punata Municipality Quillacollo Municipality Sacaba Municipality Sacabamba Municipality San Benito Municipality Santivañez Municipality Shinahota Municipality / Shinaota Municipality / Sinahota Municipality Sicaya Municipality Sipe Sipe Municipality Tacachi Municipality Tacopaya Municipality Tapacarí Municipality Tarata Municipality Tiquipaya Municipality Tiraque Municipality Toco Municipality Tolata Municipality Totora Municipality Tunari Municipality Vacas Municipality Vila Vila Municipality Vinto Municipality Azurduy Municipality Camargo Municipality, Chuquisaca Culpina Municipality El Villar Municipality Huacareta Municipality Huacaya Municipality Icla Municipality Incahuasi Municipality Mojocoya Municipality Camataqui Municipality Las Carreras Municipality Macharetí Municipality Monteagudo Municipality Padilla Municipality Poroma Municipality Presto Municipality San Lucas Municipality Sopachuy Municipality Sucre Municipality, Bolivia Tarabuco Municipality Tomina Municipality Villa Alcalá Municipality Villa Charcas Municipality Villa Serrano Municipality Villa Vaca Guzmán Municipality Villa Zudañez Municipality Tarvita Municipality Yotala Municipality Yamparáez Municipality Achacachi Municipality Achocalla Municipality Alto Beni Municipality Ancoraimes Municipality Apolo Municipality Aucapata Municipality Ayata Municipality Ayo Ayo Municipality Batallas Municipality Cairoma Municipality Cajuata Municipality Calacoto Municipality Calamarca Municipality Caquiaviri Municipality Caranavi Municipality Catacora Municipality Chacarilla Municipality Charaña Municipality Chúa Cocani Municipality Chulumani Municipality Chuma Municipality Collana Municipality Colquencha Municipality Colquiri Municipality Comanche Municipality Combaya Municipality Copacabana Municipality, La Paz Coripata Municipality Coro Coro Municipality Coroico Municipality Curva Municipality Desaguadero Municipality El Alto Municipality, La Paz Escoma Municipality General Juan José Pérez Municipality Guanay Municipality Guaqui Municipality Huatajata Municipality Huarina Municipality Humanata Municipality Ichoca Municipality Inquisivi Municipality Irupana Municipality Ixiamas Municipality La Asunta Municipality La Paz Municipality Laja Municipality Licoma Pampa Municipality Luribay Municipality Malla Municipality Mecapaca Municipality Mocomoco Municipality Nazacara de Pacajes Municipality Palca Municipality Palos Blancos Municipality Papel Pampa Municipality Patacamaya Municipality Pelechuco Municipality Pucarani Municipality Puerto Acosta Municipality Puerto Carabuco Municipality Puerto Pérez Municipality Quiabaya Municipality Quime Municipality San Buenaventura Municipality, La Paz San Pedro de Curahuara Municipality San Pedro de Tiquina Municipality Santiago de Callapa Municipality Santiago de Huata Municipality Santiago de Machaca Municipality Sapahaqui Municipality Sica Sica Municipality Sorata Municipality Tacacoma Municipality Tiwanaku Municipality Tipuani Municipality Tito Yupanqui Municipality Umala Municipality Viacha Municipality Waldo Ballivián Municipality Yaco Municipality Yanacachi Municipality Andamarca Municipality Antequera Municipality Belén de Andamarca Municipality Caracollo Municipality Carangas Municipality Challapata Municipality Chipaya Municipality Choquecota Municipality Coipasa Municipality Corque Municipality Cruz de Machacamarca Municipality Curahuara de Carangas Municipality El Choro Municipalit
Tap water is water supplied to a tap. Its uses include drinking, washing and the flushing of toilets. Indoor tap water is distributed through "indoor plumbing", which has existed since antiquity but was available to few people until the second half of the 19th century when it began to spread in popularity in what are now developed countries. Tap water became common in many regions during the 20th century, is now lacking among people in poverty in developing countries. Tap water is culturally assumed to be drinking water in developed countries, it is potable, although water quality problems are not rare. Household water purification methods such as water filters, boiling, or distillation can be used when tap water's potability is doubted; the application of technologies involved in providing clean water to homes and public buildings is a major subfield of sanitary engineering. Calling a water supply "tap water" distinguishes it from the other main types of fresh water which may be available. Publicly available treated water has been associated with major increases in life expectancy and improved public health.
Water-borne diseases are vastly reduced by fresh water availability. Providing tap water to large urban or suburban populations requires a complex and designed system of collection, storage and distribution, is the responsibility of a government agency the same agency responsible for the removal and treatment of clean water. Specific chemical compounds are taken out of tap water during the treatment process to adjust the pH or remove contaminants, chlorine may be added to kill biological toxins. Local geological conditions affecting groundwater are determining factors for the presence of various metal ions rendering the water "soft" or "hard". Tap water remains susceptible to chemical contamination. In the event of contamination deemed dangerous to public health, government officials issue an advisory regarding water consumption. In the case of biological contamination, residents are advised to boil their water before consumption or to use bottled water as an alternative. In the case of chemical contamination, residents may be advised to refrain from consuming tap water until the matter is resolved.
In many areas a compound of fluoride is added to tap water in an effort to improve dental health among the public. In some communities "fluoridation" remains a controversial issue; this supply may come from several possible sources. Municipal water supply Water wells Processed water from creeks, rivers, rainwater, etc. Domestic water systems have been evolving since people first located their homes near a running water supply, such as a stream or river; the water flow allowed sending waste water away from the residences. Modern indoor plumbing delivers clean, potable water to each service point in the distribution system, it is important that the clean water not be contaminated by the waste water side of the process system. This contamination of drinking water has been the largest killer of humans. Tap water can sometimes appear cloudy mistaken for mineral impurities in the water, it is caused by air bubbles coming out of solution due to change in temperature or pressure. Because cold water holds more air than warm water, small bubbles will appear in water.
It has a high dissolved gas content, heated or depressurized, which reduces how much dissolved gas the water can hold. The harmless cloudiness of the water disappears as the gas is released from the water. Domestic hot water is provided through district heating; the hot water from these units is piped to the various fixtures and appliances that require hot water, such as lavatories, bathtubs, washing machines, dishwashers. Everything in a building that uses water falls under one of two categories; as the consumption points above perform their function, most produce waste/sewage components that will require removal by the waste/sewage side of the system. The minimum is an air gap. See cross connection control & backflow prevention for an overview of backflow prevention methods and devices in use, both through the use of mechanical and physical principles. Fixtures are devices. Potable water supply systems are composed of pipes and valves; the installation of water pipes can be done using the following plastic and metal materials: polybutylene high density cross-linked polyethylene block copolymer of polypropylene the polypropylene copolymer random copolymer of polypropylene Layer: cross-linked polyethylene, high-density polyethylene Layer: polyethylene crosslinked, cross-linked polyethylene Layer copolymer of a random polypropylene, polypropylene random copolymer polyvinyl chloride, chlorinated polyvinyl chloride - not softened carbon steel, ordinary galvanized corrosion resistant steel Deoxidized High Phosphorus copper Lead - not used anymore for its toxicityOther materials, if the pipes made from them have been let into circulation and the widespread use in the construction of the water supply
Bolivia the Plurinational State of Bolivia is a landlocked country located in western-central South America. The capital is Sucre; the largest city and principal industrial center is Santa Cruz de la Sierra, located on the Llanos Orientales a flat region in the east of Bolivia. The sovereign state of Bolivia is a constitutionally unitary state, divided into nine departments, its geography varies from the peaks of the Andes in the West, to the Eastern Lowlands, situated within the Amazon Basin. It is bordered to the north and east by Brazil, to the southeast by Paraguay, to the south by Argentina, to the southwest by Chile, to the northwest by Peru. One-third of the country is within the Andean mountain range. With 1,098,581 km2 of area, Bolivia is the fifth largest country in South America, the 27th largest in the world and the largest landlocked country in the Southern Hemisphere; the country's population, estimated at 11 million, is multiethnic, including Amerindians, Europeans and Africans.
The racial and social segregation that arose from Spanish colonialism has continued to the modern era. Spanish is the official and predominant language, although 36 indigenous languages have official status, of which the most spoken are Guarani and Quechua languages. Before Spanish colonization, the Andean region of Bolivia was part of the Inca Empire, while the northern and eastern lowlands were inhabited by independent tribes. Spanish conquistadors arriving from Cuzco and Asunción took control of the region in the 16th century. During the Spanish colonial period Bolivia was administered by the Royal Audiencia of Charcas. Spain built its empire in large part upon the silver, extracted from Bolivia's mines. After the first call for independence in 1809, 16 years of war followed before the establishment of the Republic, named for Simón Bolívar. Over the course of the 19th and early 20th century Bolivia lost control of several peripheral territories to neighboring countries including the seizure of its coastline by Chile in 1879.
Bolivia remained politically stable until 1971, when Hugo Banzer led a coup d'état which replaced the socialist government of Juan José Torres with a military dictatorship headed by Banzer. Banzer's regime cracked down on leftist and socialist opposition and other forms of dissent, resulting in the torture and deaths of a number of Bolivian citizens. Banzer was ousted in 1978 and returned as the democratically elected president of Bolivia from 1997 to 2001. Modern Bolivia is a charter member of the UN, IMF, NAM, OAS, ACTO, Bank of the South, ALBA and USAN. For over a decade Bolivia has had one of the highest economic growth rates in Latin America, it is a developing country, with a medium ranking in the Human Development Index, a poverty level of 38.6%, one of the lowest crime rates in Latin America. Its main economic activities include agriculture, fishing and manufacturing goods such as textiles, refined metals, refined petroleum. Bolivia is rich in minerals, including tin and lithium. Bolivia is named after Simón Bolívar, a Venezuelan leader in the Spanish American wars of independence.
The leader of Venezuela, Antonio José de Sucre, had been given the option by Bolívar to either unite Charcas with the newly formed Republic of Peru, to unite with the United Provinces of Rio de la Plata, or to formally declare its independence from Spain as a wholly independent state. Sucre opted to create a brand new state and on 6 August 1825, with local support, named it in honor of Simón Bolívar; the original name was Republic of Bolívar. Some days congressman Manuel Martín Cruz proposed: "If from Romulus comes Rome from Bolívar comes Bolivia"; the name was approved by the Republic on 3 October 1825. In 2009, a new constitution changed the country's official name to "Plurinational State of Bolivia" in recognition of the multi-ethnic nature of the country and the enhanced position of Bolivia's indigenous peoples under the new constitution; the region now known as Bolivia had been occupied for over 2,500 years. However, present-day Aymara associate themselves with the ancient civilization of the Tiwanaku culture which had its capital at Tiwanaku, in Western Bolivia.
The capital city of Tiwanaku dates from as early as 1500 BC when it was a small, agriculturally based village. The community grew to urban proportions between AD 600 and AD 800, becoming an important regional power in the southern Andes. According to early estimates, the city covered 6.5 square kilometers at its maximum extent and had between 15,000 and 30,000 inhabitants. In 1996 satellite imaging was used to map the extent of fossilized suka kollus across the three primary valleys of Tiwanaku, arriving at population-carrying capacity estimates of anywhere between 285,000 and 1,482,000 people. Around AD 400, Tiwanaku went from being a locally dominant force to a predatory state. Tiwanaku expanded its reaches into the Yungas and brought its culture and way of life to many other cultures in Peru and Chile. Tiwanaku was not a violent culture in many respects. In order to expand its reach, Tiwanaku exercised great political astuteness, creating colonies, fostering trade agree
Provinces of Bolivia
A province is the second largest administrative division in Bolivia, after a department. Each department is divided into provinces. There are 112 provinces; the country's provinces are further divided into 337 municipalities which are administered by an alcalde and municipal council. Departments of Bolivia Municipalities of Bolivia Instituto Nacional de Estadística - Bolivia
Argentina the Argentine Republic, is a country located in the southern half of South America. Sharing the bulk of the Southern Cone with Chile to the west, the country is bordered by Bolivia and Paraguay to the north, Brazil to the northeast and the South Atlantic Ocean to the east, the Drake Passage to the south. With a mainland area of 2,780,400 km2, Argentina is the eighth-largest country in the world, the fourth largest in the Americas, the largest Spanish-speaking nation; the sovereign state is subdivided into twenty-three provinces and one autonomous city, Buenos Aires, the federal capital of the nation as decided by Congress. The provinces and the capital exist under a federal system. Argentina claims sovereignty over part of Antarctica, the Falkland Islands, South Georgia and the South Sandwich Islands; the earliest recorded human presence in modern-day Argentina dates back to the Paleolithic period. The Inca Empire expanded to the northwest of the country in Pre-Columbian times; the country has its roots in Spanish colonization of the region during the 16th century.
Argentina rose as the successor state of the Viceroyalty of the Río de la Plata, a Spanish overseas viceroyalty founded in 1776. The declaration and fight for independence was followed by an extended civil war that lasted until 1861, culminating in the country's reorganization as a federation of provinces with Buenos Aires as its capital city; the country thereafter enjoyed relative peace and stability, with several waves of European immigration radically reshaping its cultural and demographic outlook. The almost-unparalleled increase in prosperity led to Argentina becoming the seventh wealthiest nation in the world by the early 20th century. Following the Great Depression in the 1930s, Argentina descended into political instability and economic decline that pushed it back into underdevelopment, though it remained among the fifteen richest countries for several decades. Following the death of President Juan Perón in 1974, his widow, Isabel Martínez de Perón, ascended to the presidency, she was overthrown in 1976 by a U.
S.-backed coup which installed a right-wing military dictatorship. The military government persecuted and murdered numerous political critics and leftists in the Dirty War, a period of state terrorism that lasted until the election of Raúl Alfonsín as President in 1983. Several of the junta's leaders were convicted of their crimes and sentenced to imprisonment. Argentina is a prominent regional power in the Southern Cone and Latin America, retains its historic status as a middle power in international affairs. Argentina has the second largest economy in South America, the third-largest in Latin America, membership in the G-15 and G-20 major economies, it is a founding member of the United Nations, World Bank, World Trade Organization, Union of South American Nations, Community of Latin American and Caribbean States and the Organization of Ibero-American States. Despite its history of economic instability, it ranks second highest in the Human Development Index in Latin America; the description of the country by the word Argentina has been found on a Venetian map in 1536.
In English the name "Argentina" comes from the Spanish language, however the naming itself is not Spanish, but Italian. Argentina means in Italian " of silver, silver coloured" borrowed from the Old French adjective argentine " of silver" > "silver coloured" mentioned in the 12th century. The French word argentine is the feminine form of argentin and derives from argent "silver" with the suffix -in; the Italian naming "Argentina" for the country implies Terra Argentina "land of silver" or Costa Argentina "coast of silver". In Italian, the adjective or the proper noun is used in an autonomous way as a substantive and replaces it and it is said l'Argentina; the name Argentina was first given by the Venetian and Genoese navigators, such as Giovanni Caboto. In Spanish and Portuguese, the words for "silver" are plata and prata and " of silver" is said plateado and prateado. Argentina was first associated with the silver mountains legend, widespread among the first European explorers of the La Plata Basin.
The first written use of the name in Spanish can be traced to La Argentina, a 1602 poem by Martín del Barco Centenera describing the region. Although "Argentina" was in common usage by the 18th century, the country was formally named "Viceroyalty of the Río de la Plata" by the Spanish Empire, "United Provinces of the Río de la Plata" after independence; the 1826 constitution included the first use of the name "Argentine Republic" in legal documents. The name "Argentine Confederation" was commonly used and was formalized in the Argentine Constitution of 1853. In 1860 a presidential decree settled the country's name as "Argentine Republic", that year's constitutional amendment ruled all the names since 1810 as valid. In the English language the country was traditionally called "the Argentine", mimicking the typical Spanish usage la Argentina and resulting from a mistaken shortening of the fuller name'Argentine Republic'.'The Argentine' fell out of fashion during the mid-to-late 20th century, now the country is referred to as "Argentina".
In the Spanish language "Argentina" is feminine, taking the feminine article "La" as the i