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- How to determine the participial turnover
The participial turnover – syntactic tool that adds speech expression and simplifies it. In speech these structures are rare. But the right to build sentences with a verbal participle phrases, find them in the finished texts, and provide writing and intonation owe any literate person. - What is synthetic polymers
Synthetic polymers are artificially produced by synthesis, a simple low molecular weight substances. Polymers have found wide application in light, heavy and food industries, construction, etc. - The most famous psychologists in the world
Psychology as an independent science was known in the ancient world. For many centuries it has evolved, changed and supplemented by scientific papers, treatises and books such famous psychologists as Sigmund Freud, Vladimir Levi, Abraham Maslow, Boris Ananyev, Ernst Weber, Akop Nazaretyan, Victor Ovcharenko, etc. - What works by Pushkin wrote
Alexander Pushkin, perhaps, will forever retain its reputation as the greatest poet in the history of Russian literature. Contributed to this, of course, a special talent of the writer, who lived from 1799 to 1837 years and, unfortunately, who died early in a tragic duel. So what are the works included in the literary heritage of Pushkin? - What punctuation marks are put in circulation
The appeal refers to words or combinations of words that indicate the addressee of the text, they can be both animate and inanimate object. In speech treatment are usually "allocated" a pause, and in writing – commas and exclamation marks. - Where is the source of the Volga
The Volga river – great Russian river, has long become a symbol of Russia. She is depicted on the canvases of artists, its greatness is not just glorified in songs and poems. When you hear the name of this river, imagination immediately draws a picture of the vast water expanses. But in the upper Volga is only a small trickle. - In area to identify the parties
Every year the task of geometry become more difficult. Is not enough to know how to count on ready-made formulas. You must be able to from a ready to bring a new formula to find out one way or the other. - What is the function of vacuoles
Vacuoles-membrane vesicles in the cell cytoplasm filled with cell SAP. In plant cells, vacuoles occupy up to 90% of the volume. Animal cells have temporary vacuoles which occupy not more than 5% of their volume. Function of vacuoles depend on what cell they are in. - What are the three laws of Newton
More than three hundred years ago angliiskii the famous scientist Isaac Newton laid the foundations on which rests the modern practical and theoretical physics. It set out three laws of mechanics marked a turning point in the history of science. - How many kilograms in one liter
The answer to the question "How many kilograms in one liter?" is very ambiguous and depends on many parameters that are worth to perform. For example, it is the nature of the substance, temperature, number of voids, etc. - What is the electric voltage
Voltage is the ratio of the work spent by the system on a moving charge, voltage. In urban power grids use a three-phase network. How to behave when caught in box of the ragged wire, and which can lead to incorrect behavior? - What is alternating current
Any person who is not particularly devoted to the area of electrical engineering, I heard about that distinguish between DC and AC. Experts say more of a pulsing electric current. Where, in which areas of energy use and other current and what is between them a fundamental difference? - What a complex salt
Average, acidic and basic salts are the products of complete or incomplete substitution of hydrogen atoms in molecules of acids with metal atoms or hydroxide ions in the molecules of bases acidic residues. But in addition to medium, acidic and basic, there are also double and complex salts. What are they? - What makes cement
Cement is one of main materials in the construction, a special binder of mineral components during solidification form a very durable, solid material. The cement produced from different raw materials depending on the region. - What insects are different from arachnids
Some of the living creatures on the planet, cause people to have contradictory and ambivalent feelings. Among them include spiders and insects. Watching the behavior of these multilegged creatures, few people notice the differences between them. But insects differ significantly from members of the class Arachnida. - The most popular works of Shakespeare
From the work of the great English poet and playwright William Shakespeare to have survived 36 plays, 2 long poems and the "crown" of sonnets. The popularity of all these works is difficult to overestimate, but some plays are more often put on the stage, write on the basis of their screenplays and films, as well as translate other works of art. - How to find the derivative function at the point
A function can be differentiable for all values of the argument, can have a derivative only at certain intervals or does not have a derivative. But if the function has a derivative at some point is always a number, not a mathematical expression. - How to find the area and perimeter of a square
A square is a geometrical figure consisting of four sides of equal length and four right angles, each of which is equal to 90°. Determine the area or perimeter of a quadrilateral, with anyone, is required not only when solving problems in geometry and in everyday life. These skills can be useful, for example, during repairs when calculating the right amount of materials - floor coverings, walls or ceiling, as well as a breakdown of lawns and garden beds etc. - How to find the frequency of sound vibrations
Sound waves are called mechanical deformations that propagate in any elastic medium (liquids, solids, gases). Like other waves, sound is characterized, in particular, the frequency of oscillation. Depending on the initial conditions to find the frequency of the sound in different ways. - How to determine the type of conic curve
The answer is quite simple. Transform the General equation of a curve of second order to the canonical form. The desired curves are only three, and it is an ellipse, hyperbola and parabola. The form of the relevant equations can be seen in additional sources. There you can verify that the full procedure of reduction to canonical form should be avoided because of its bulkiness. - How to determine the cross-sectional area
If the cross section of the object has a complex shape, calculate its area to be split into areas of simple shapes. After that, it will be possible to calculate the areas of these sections by appropriate formulas, and then to add them up. - How to determine the equilibrium constant
Constant equilibrium characterizes the displacement of the reversible chemical reaction toward the formation of the reaction products or starting materials. To calculate the constant of equilibrium in a variety of ways, depending on the conditions of the problem. - How to find the equivalent
The equivalent is called a particle, which is chemically equal (equivalent) to acid-base reactions one of hydrogen ion and the redox reactions of the type a single electron. The equivalent is expressed as a number without dimension, while the equivalent mass is measured in g/mol. - How to determine the acidity of water
Water always contains some amount of hydrogen ions H^+ and hydroxyl ions Oh^-. If more hydrogen ions, the water becomes acidic in nature, if there are more hydroxyl ions, it is alkaline. To assess the degree of acidity of an aqueous solution there is a pH value. It is numerically equal to the negative decimal logarithm of the activity of hydrogen ions, the unit dimension is mol/liter. That is, pH = -lg[H^+]. The pH value ranges from 0 to 14. If it is less than 7, the solution is acidic. Accordingly, if more than 7 – alkaline. - How to find the concentration of acid
The concentration of the acid – value that indicates what proportion of this substance is a certain quantity or volume of its solution. It can be expressed in different ways: in the form of a mass fraction, molarity, molality, etc. In laboratory practice, it is often necessary to determine the concentration of acid. - How to find the degree measure of angle
Measure flat of angles in degrees was invented in ancient Babylon long before our era. The people of the state preferred a sexagesimal system of calculation, so division corners on 180 or 360 units today looks a little weird. However, proposed in the modern system of SI units, multiples of the number PI, not less weird. These two options are not limited to the currently used designations of angles, so the task of translating their values in degree measure arises quite often. - Where birds fly
Before the onset of cold weather many species of birds inhabiting the Northern and temperate latitudes, start the long journey South. For wintering in warmer climes fly, for example, ducks, swallows, thrushes, cranes. For some reason they go into such a long and dangerous journey? - How to determine the critical volume of sales
Economic concept of critical volume of sales corresponds to the position of the enterprise market, in which revenues from the sale of goods is minimal. This situation is called break even point, when the demand for products is falling and profit barely covers the cost. To determine the critical volume of sales, use several methods. - How to make hydrogen generator
Hydrogen generator – a device generating hydrogen from water on Board the vehicle. The resulting gas is fed into the intake manifold of the engine, providing fuel savings and in some cases the increase of its capacity. In the US, these industrial generators are manufactured and cost from 300 to 800 dollars. In the Russian context have to do everything yourself. - How to transfer a pension in Ukraine
A Russian citizen, moved to Ukraineafter obtaining residence permit in the country has the right to receive the Ukrainian pension in the same amount as the citizens of a neighboring state with similar seniority. To do this, he needs to transfer to Ukraine its pension business. But better after moving to be a recipient of the Russian pension benefit law, it does not.