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The decibel originates from methods used to quantify signal loss in telegraph and telephone circuits. Until the mid-1920s, the unit for loss was miles of standard cable (MSC). 1 MSC corresponded to the loss of power over one mile (approximately 1.6 km) of standard telephone cable at a frequency of 5000 radians per second (795.8 Hz), and matched closely the smallest attenuation detectable to a ...
A reserve currency is a foreign currency that is held in significant quantities by central banks or other monetary authorities as part of their foreign exchange reserves.The reserve currency can be used in international transactions, international investments and all aspects of the global economy.
Unlike the Spanish milled dollar, the Continental Congress and the Coinage Act prescribed a decimal system of units to go with the unit dollar, as follows: [15] [16] the mill, or one-thousandth of a dollar; the cent, or one-hundredth of a dollar; the dime, or one-tenth of a dollar; and the eagle, or ten dollars. The current relevance of these ...
In order to convert a rational number represented as a fraction into decimal form, one may use long division. For example, consider the rational number 5 / 74 : 0.0 675 74 ) 5.00000 4.44 560 518 420 370 500 etc. Observe that at each step we have a remainder; the successive remainders displayed above are 56, 42, 50.
In the following table, for each country/territory, IMF figures shows government's revenue, expenditure, and net lending (+)/ borrowing (-) as percentage of GDP and in current USD, calculated on an exchange rate basis, i.e., not in purchasing power parity (PPP) terms. [3] Sorting is alphabetical by country code, according to ISO 3166-1 alpha-3.
The Pakistani rupee depreciated against the US dollar until around the start of the 21st century, when Pakistan's large current-account surplus pushed the value of the rupee up versus the dollar. Pakistan's central bank then stabilized by lowering interest rates and buying dollars, in order to preserve the country's export competitiveness.
A foreign direct investment (FDI) is an investment in the form of a controlling ownership in a business in one country by an entity based in another country. It is thus distinguished from a foreign portfolio investment by a notion of direct control.
This figure is an important indicator of a nation's ability to take on debt and sustain spending and is influenced not only by real estate prices, equity market prices, exchange rates, liabilities and incidence in a country of the population, but also by human resources, natural resources, and capital and technological advancements, which may ...