Let's analyze different types of friction, reveal their distinctive and similar features. Let us give examples of the use of friction in nature and technology
Secondary education and schools 2024, September
Every student knows that when there is contact between two solid surfaces, the so-called friction force arises. In this article, we will consider what it is, focusing on the point of application of the friction force
The article discusses the main types of friction in mechanical processes, outlines ways to determine the friction forces. Features of the friction forces during the movement of bodies in various media allow us to solve the problems of studying phenomena
California is a peninsula located in the western part of the North American mainland. It is narrow and long, the length of this part of the land is 1200 km. In the widest places it diverges by 240 km. The area of the peninsula is about 144 thousand km2. Geographically belongs to Mexico, it has two states - Northern and Southern California
The article is about electricity. The traditional and alternative sources of this energy, as well as the means of transmission and its consumers are considered
Turgenev Ivan Sergeevich, whose stories, novels and novels are known and loved by many today, was born on October 28, 1818 in the city of Orel, into an old noble family. Ivan was the second son of Varvara Petrovna Turgeneva (nee Lutovinova) and Sergei Nikolaevich Turgenev
In complex sentences, in addition to the main one, there is always a subordinate. This second dependent part can play different roles
Organic chemistry has a huge number of studied and studied compounds! One of them is methylamine. It's always good to learn something new. The article briefly but succinctly describes the formula, properties and methods for obtaining this substance
Interesting facts about Japan really make everyone think, even the most sophisticated and experienced travelers. This state is very different from the corners of the globe we are used to
Which school bag is suitable for a girl? The model should be not only beautiful, but also of high quality. Do not buy a satchel without first trying it on
Humanity has long been engaged in the selection of plants and animals suitable to meet the needs of the population. This knowledge is combined into science - selection. Genetics, in turn, provides the basis for more careful selection and breeding of new varieties and breeds that have special qualities. In the article we will consider the description of these two sciences and the features of their application
There are 206 bones in the human body, most of which do not exceed a few cubic centimeters in size. The most painful and massive bone in the body is the femur. Its structure allows us to walk straight and not fall. Through the knee joint, the femur connects to the tibia and fibula, forming a free lower limb
Ural is one of the most picturesque regions of the Russian Federation. You need to have great endurance not to pay attention to this region as a traveler. The largest cities of the Urals, such as Yekaterinburg, Perm and others, are important centers of industry and economy. Although some of them may seem uninteresting at first glance, there are many attractions on their territory
Crocodile… A reptile or amphibian creature that looks like a dinosaur? How to figure it out? Similarities and differences between two different classes
Who are peacocks? Previously, they were called birds of paradise, emperors admired them, and the beauty of these birds prompted legends about them. Where do they live? What country is their home?
What animals are oviparous? Read about the amazing platypus and two echidnas living in Australia
The whale is an amazing sea creature that inspires awe. What does a whale breathe? How can he stay under water for a long time?
In today's technology-fuelled society, developing personality and learning skills requires a lot of effort on the part of both parents and teachers. In view of this situation, a new concept has been introduced into the learning process. What is UUD? How can you help your child learn to shape their personality from an early age?
The new standards that develop the child's personality require fundamental changes from the teaching staff. Methods developed for instilling personal qualities are successfully used in many schools in the Russian Federation
The great tragic poet Sophocles is on a par with Aescholus and Euripides. He is known for such works as "Oedipus Rex", "Antigone", "Electra". He held government positions, but his main occupation was still composing tragedies for the Athenian stage. In addition, Sophocles introduced several innovations in theatrical performance
In this article we will reveal the interpretation of the word "brave". This is an adjective. It characterizes nominal parts of speech. We will indicate what meaning this unit of speech is endowed with. Also, with the help of synonyms, we will reveal its meaning even better. For a better perception of information, we will support the theory with examples of sentences
Chulym has a considerable length, quite a bit short of 2 thousand km. To be more precise, the length of the water flow is 1895 km. Although in some official sources there is a slightly different figure - 1799 km. 134 thousand km. sq. - this is the area of the basin, which includes the Chulym River. The source of the watercourse is in Khakassia. On its way, it crosses the territories of the Krasnoyarsk Territory and the Tomsk Region
Guidelines allow you to perform certain work on a well-planned structure. For example, guidelines are relevant for term papers, which are a mandatory element in the higher education system. Let's dwell on this issue in more detail
Today we will get acquainted and characterize the EGP of the European North. We will consider some issues: climate, natural resources, economy. We will also introduce you to some cultural and natural monuments located on this territory
Bunin's lyrics occupies a rather significant place in his work, despite the fact that Ivan Alekseevich gained fame primarily as a prose writer. However, Ivan Bunin himself claimed that he was primarily a poet. The path in the literature of this author began precisely with poetry
There are two ways for a liquid to become vapor - evaporation and boiling. Let's take a closer look at the features of each process
To determine the parallelism and perpendicularity of planes, as well as to calculate the distances between these geometric objects, it is convenient to use one or another type of equation. In this article, we will consider for which problems the equation of a plane in segments is convenient to use
In the verbs of the Russian language there are morphological non-permanent and some permanent features. One of them includes reflexive and non-reflexive types of verbs. Non-reflexive verbs, as well as reflexive ones, carry the presence or absence of special reflexive derivational postfixes - -s and -sya. Let's try to figure out what it is and how such verbs are used
The island of Grenada is located on the border of the Atlantic Ocean and the Caribbean Sea. Currently, it is a fairly popular resort, which annually attracts a huge number of lawyers. Read about the structure of the country, the economy and the peculiarities of living in our article
Many far from geography people believe that the driest and most waterless continent on Earth is Africa with its famous deserts. However, this is a profound misconception. Distant and mysterious Australia, of course, is much smaller than Africa and rarely appears in international news, but it is she who takes first place in terms of aridity
In nature, chlorine occurs in the gaseous state and only in the form of compounds with other gases. Under conditions close to normal, it is a greenish, poisonous, caustic gas. It has more weight than air. Has a sweet smell. The chlorine molecule contains two atoms. It does not burn at rest, but at high temperatures it interacts with hydrogen, after which an explosion is possible
Today, each of us, when designating certain measures of measurement, uses only modern terms. And this is considered normal and natural. However, when studying history or reading literary works, we often come across such words as “spans”, “arshins”, “elbows”, etc
How to write the word "despite"? How many spellings does this language unit have? Can this word be written separately? The article tells how to write correctly: “despite” or “despite”. Examples of sentences for better memorization are given
Trials and tests lie in wait for us all our lives. Without exaggeration, we can say that in the twenty-first century, the existence of a person of civilization is constantly becoming more complicated. Tests, readiness and knowledge checks start from kindergarten. To never end. Let's remember our jitters before taking the exam - whether it's graduation or entrance
Many believe that the feeling of pity is an unacceptable thing, no one wants to be pitied. But pity can still be healing. You just need to know how to regret. Pay attention, it was not in vain that in ancient times they said: "He pities her - he loves her." If you pity yourself properly, you will benefit from it
As a percentage, about forty percent of the resources of the Stavropol Territory account for materials for construction and hydrocarbons. One tenth of the resources are water. The remaining tenth is accounted for by other mineral resources
Belgorod region is one of the youngest in the Russian Federation. It was founded in 1954, and its main part used to be part of the Kursk region
The increase in the human population is not an endless process. The most important factor against this is the limited natural resources and the depletion of the most important of them. Natural resources are all that a person uses in the course of his life
The Nizhny Novgorod region is not rich in minerals, the main of which are construction. But she makes the most of her resources and the advantage of her geographic location
Mineral resources in the Stavropol Territory are stored in three hundred deposits. According to the estimated value of underground deposits, 42 percent is construction materials