All articles
- How to translate the section in diameter
In normative documents on the design grid to indicate wire size, and caliper can measure only the diameter of the core. These values are interlinked and can be translated one into another. - How to find the percentage concentration
Concentration is the value which characterizes the qualitative composition of the solution. Concentration is called the number of the solute or its mass to the total volume or mass of fluid. Thus, the most important characteristics are the mass and volume fraction. - How to determine the reaction order
The order of chemical reactions on any substance is the exponent, which is the concentration in the kinetic equation of the reaction. The order is zero, first and second. How to determine the specific reaction? - How to identify the anode of the diode
A diode has two electrodes, called anode and cathode. It is capable of conducting current from the anode to the cathode, but not Vice versa. The marking that explains the purpose of the findings is not available on all diodes. - How to find density chemistry
Density is one of the most important parameters of the physical body. According to the definition, density is a scalar value, which is measured for the homogeneous bodies as a ratio of body mass to its volume. There are several ways to learn the value of this parameter. - How to purify water from nitrates
Recently often speak about the widespread distribution of nitrates (salts of nitric acid) and their negative impact on human health. Oddly enough, a large amount of salts contained in the water, so it must be cleaned. - How to find the modulus of a complex number
Real numbers will not be enough to solve any quadratic equation. The simplest of quadratic equations with no roots among the real numbers is x^2+1=0. In its decision, it turns out that x=±sqrt(-1), and according to the laws of elementary algebra, extracting the root of an even degree of a negative number is impossible. - What is the semantics
The value of a word in linguistics called semantics. This study examines the process of making sense of a word, its meanings, and also deals with one of the most elementary units of language – sign. - How to measure the resistance of the resistor
The resistor is one of the main elements of any electrical circuit. Its main purpose is to create a certain resistance. Resistance can be measured with special devices or to identify a special marking on the body of the resistor. - Why do stars fall
In the age of space exploration and science in the age of rationalism and pragmatism, there is a romantic superstition: if a star is falling to make a wish. After these words, usually followed by a long discussion on the topic: "what is a shooting star and why it crashes". - How to solve problems in theoretical mechanics
Theoretical mechanics is one of the most fundamental scientific disciplines that plays a major role in preparing future engineers and technicians. The task of "teormeh" is based on the knowledge of higher mathematics and physics. - How to calculate the diagonal of the rectangle
A closed geometric figure formed by two pairs lying opposite each other parallel lines of equal length is called a parallelogram. And a parallelogram, all angles of which equal 90°, it is called a rectangle. In this figure it is possible to hold two lines of equal length connecting opposite vertices is a diagonal. The length of these diagonals is computed in several ways. - What the integrals
The integral is called the reciprocal of the differential of a function. Many physical and other problems are reduced to solving complex differential or integral equations. This requires knowing the differential and integral calculus. - What is prism
Prism - a geometric shape, a polyhedron with two equal and parallel faces, called bases and having the shape of a polygon. The other faces are the bases of their sides are called lateral. - How to get gold color
Despite the huge range of paints at the art and home improvement stores, gold paint on sale is not always. More often it should be done independently. In this case it is important to determine the basis for the paint. - How to convert liters to milliliters
When working with small volumes are often used as a unit of volume like milliliter (ml). A milliliter is called a thousandth of a liter. That is, in one liter contains one thousand milliliters. To convert liters to milliliters you don't even need the calculator – fairly simple maths. - How to learn to do long division
The process of division in a column is the sequential execution of elementary arithmetic operations. To learn how to divide in a column, you just need to practice it a few times. The algorithm of dividing in a column let us look at the following examples - divide in a column of integers with no remainder, remainder and fractional numbers represented in decimal. - How to calculate cubic volume
Cubic volume is a characteristic of a body, showing its ability to accommodate a certain number of cubes of a substance or gas. To calculate the cubic volume very easily. - How to determine the distance to planets
Despite the fact that most close from us planets extremely far from Earth, distance it is of ultimate importance. And if so, it can be determined. And this was first done a long time ago – in the days of the Ancient Greek astronomer, mathematician and philosopher Aristarchus from the island of Samos proposed a method of determining the distance to the moon and its size. How can you determine the distance to planets? The method is based on the phenomenon of parallax. - How to find the formula area of isosceles triangle
This is called an isosceles triangle with two sides equal to each other. All formulas are designed to determine the area of an arbitrary triangle, just to isosceles. However, the formula of the area of an isosceles triangle have a simpler form and are sometimes more convenient in calculations. - How to write the dictation without mistakes
One of the most important skills in the teaching of the native language – competent and correct presentation of ideas. This plays a big role in writing dictations without errors. How to achieve this goal, and to learn to understand all the subtleties of language? - How to bring the matrix to canonical form
The matrix is a convenient tool for solving various algebraic problems. Knowing some simple rules for operating with them allows you to bring the matrix to a in any convenient and necessary at the moment. Often useful is the use of the canonical form of the matrix. - How to determine the density of the liquid
The fluid density is a physical quantity that shows the mass of the fluid per unit volume. The density of the fluid can be measured as an indirect method, and direct measurements with the help of special devices. - How to convert watts to joules
Watt is a unit of power in SI system. Has the Russian marking W W. foreign and Named the unit in honor of the inventor James watt. Now in watts measured power of all the appliances, this feature power consumption can be found either on the device or in the user manual. - How to calculate load current
When designing the schema for the new wiring or overhaul an existing one, to determine the required wire cross-section it is necessary to calculate maximum load current in the mains. This can be done by simple calculations. - How to calculate side of triangle
The triangle as a flat geometric figure made up of three parties that form the connection points (vertices of the) three angles. These angles and sides are connected by permanent relations, which allows one to find unknown side lengths when you have at least a minimal set of data about values of angles and lengths of other sides. Below are several ways to determine the length of sides of triangle in relation to the Euclidean plane. - How to investigate the function of parity
Examination of functions of even parity and odd parity helps to build the graph of the function and to investigate the nature of its behavior. For this study it is necessary to compare the function written for the argument "x" and argument "-x". - How to solve geometric progression
A geometric progression is a sequence of numbers b1, b2, b3, ... , b(n-1), b(n) such that b2=b1*q, b3=b2*q, ... , b(n)=b(n-1)*q, b1≠0, q≠0. In other words, each member of the progression is obtained from the previous by multiplying it at some nonzero denominator progression q. - How to determine the distance to the object
The ability to determine distance to objects on the ground can be useful in a variety of situations. For accurate and rapid determination of distances, there are special devices (range finders, scales, binoculars, rifle scopes and telescope). However, even without special tools, you can learn to find distance with simple available tools. - How to find the volume of a parallelepiped
The form of a parallelepiped have a real objects. Examples are the room and the pool. Details with this form - are not uncommon in the industry. For this reason, there is often the problem of finding the volume of this shape.