Problems of physics, in which bodies moving and hitting each other, require knowledge of the laws of conservation of momentum and energy, as well as an understanding of the specifics of the interaction itself. This article provides theoretical information about elastic and inelastic impacts and provides special cases of solving problems
Secondary education and schools 2024, September
What is an automaton, does this word have the same meaning and how to make good, non-trivial sentences with it?
Make sentences with the word "art" - what could be easier? But when you want to be unbanal and earn the praise of a teacher, all the words disappear somewhere
From childhood, we know something about the attraction of bodies and objects to the Earth, about Isaac Newton, an apple and a head
The world of the artistic culture of the Renaissance is, first of all, the world of renewal of a person of that era, his ideas about himself and the world around him
The Benguela Current is a cold water mass circulating off the western coast of Africa in the Atlantic Ocean. It washes the western part of the mainland, coming from the south and rushing to the north, then to the northwest. The current is a movement that continues the flow of the West Winds and turns into the South Tradewind. Water circulation begins south of the Cape of Good Hope. Ends at the coast of the Namib Desert, which is located in the western part of Africa
Introductory words and addresses are marked with punctuation marks. Every student knows this. But if punctuation errors are rare in writing sentences in which there is an appeal, then the situation is more complicated with introductory words. In order to understand this issue, you should remember the rules
Even in elementary school, we are taught to count by tens. We are all familiar with these numerals from childhood, we use them daily without hesitation. But how many have noticed that one of the numbers stands out from the general series? Has anyone ever wondered the origin of the word "forty"?
What connects a huge snake, a dead sorcerer, the progenitor of mankind, the size of the volume, a park in Peru? And also a male name, the Academy of Sciences and the airport in Novosibirsk? They all have similar names - Man, Manu, MAN. Let's understand the history and definitions of this unusual word for modern hearing
Cherepovets is rightfully considered a major city of the Vologda Oblast. It is a city of metallurgists and industrialists. It would seem that it was created to become one of the urban centers of Russia. However, the history of Cherepovets did not begin as prosaically as it seems at first glance
There is no single answer to the question of what eros is. Someone sees tender sensual love in this word, others look for a vulgar subtext in it, others turn their gaze to ancient Greek mythology. And in fact, everyone is right. Let's try together to understand the definitions of this word, how its meaning has changed throughout history and what is considered eros today
What is a joke in the literary sense, and what jokes did Pushkin tell? How to study the history of Russia using political jokes, and when does a joke grow a “beard”? Let's try to consider these questions
In place of the collapsed Yugoslavia now there are 6 independent states. Each of them has its own "main" city. Belgrade - the capital of Yugoslavia until the collapse of this state
The whole world consists of the movement of any bodies, including people. It obeys various laws of physics that study its regularities. The science that studies the movement of a body is called mechanics. In turn, it is divided into sections, one of which is statics. For the most part, it is aimed at revealing the patterns of the equilibrium state of bodies
One of the works included in the cycle "Dark Alleys" by I. Bunin is "The Caucasus". This story is a vivid example of the extraordinary artistic gift of the writer. It is amazing how in such a small work, the author was able to convey the inner world and state of mind of completely different people. You can learn the true mastery of the Russian artistic word by analyzing Bunin's story "The Caucasus" or any other creation from this collection
The Republic of Iraq is a state in Southwest Asia. Its area is more than 435 sq. km. The population of Iraq is about 36 million people
The deserts of the Arctic are vast areas covered with glaciers and snow, where extremely sparse vegetation grows. This area is of great interest in cognitive and scientific terms. In the article, the reader will get acquainted with the types and properties of the soils of the Arctic desert
B. G. Belinsky said that it is upbringing that decides the fate of each person. This can be fully attributed to Oblomov Ilya Ilyich and Stolz Andrey Ivanovich - the two main characters of the novel "Oblomov" by I. A. Goncharov. These people, it would seem, come from the same environment, class, time
The magnetic field reliably protects the Earth from cosmic radiation and the solar wind, which is capable of destroying the gaseous shell of the Earth. Its existence is explained by the processes occurring inside the planet with an iron core and molten metal surrounding it
The rules of Russian spelling and punctuation are considered one of the most difficult for foreigners to learn. And not every Russian-speaking person can boast that he knows the basics of grammar perfectly and correctly places commas in the text. A punctuation mark such as a semicolon, due to the lack of knowledge of the writer, is often omitted or replaced by a more strict period. Although the rules for using the sign are simple and do not require memorization
Interesting facts about autumn will be useful to all people who are interested in the mysteries of nature. What features does the season have, what to tell children about it?
Sulfur is an element of D. I. Mendeleev's periodic system, its atomic number is sixteen. It has non-metallic properties. Denoted by the Latin letter S. The name, presumably, has an Indo-European root - “burn”
Representatives of the Vorobin family are well known for their attachment to humans. Such organisms are also called synanthropes. In our article you will get acquainted with typical representatives, the features of their organization and life
What were the first settlements on the territory of the modern Nile Valley? How and for what purpose was a single state formed? Answers - in the next article
To each of us in childhood, my mother read fairy tales. The heroes of my mother's stories went to the forest for mushrooms, some with a basket, and some with a basket? But are there any differences between these subjects? Let's figure it out together
The type of animal flatworms, which are included in the group of bilaterally symmetrical, is studied by the science of biology. Flatworms (Platyhelminthes) are not the only representatives of this group, more than 90% of animals belong to it, including annelids and roundworms, arthropods, molluscs, etc
In 1861, with the help of a newly invented method of spectral analysis, a new chemical element, rubidium, was discovered. Then, with the discovery of the periodic law by D. I. Mendeleev in 1869, rubidium, along with other elements, took its place in the table, which brought order to chemical science. Further study of rubidium showed that this element has a number of interesting and valuable properties. We will consider here the most characteristic and important of them
Teaching Russian through online lessons is not only a great alternative to the usual classes with a tutor
In modern politics, a consul is an official who is a representative of his state in another region. This diplomat performs a number of functions to protect the political, economic and legal interests of his country. In this publication, we will talk in detail about what a consul is on the example of Ancient Rome
Burma is a country in Southeast Asia, which is located on the coast of the Indian Ocean. This state is little known to the inhabitants of our country, since for a long time it was in forced isolation from the entire civilized world. Now the situation is changing in the country for the better, tourists from all over the world are gaining access. Before traveling to a little-known state, it is advisable to get to know the location of Burma, its brief history, sights and features
If you think about the question of how to spell putty or putty, then you can use both of these words when writing and using in speech. The difference here is only in the spelling subtleties of the use of names
Old piles of things lay in the room. No one needs transistors, receivers, old holey boots, bundles of old, already yellowed from time, newspapers piled in a row, a broken frame, old tires, non-working irons, empty bottles: this whole sad picture evoked unhappy thoughts: “Why keep all this trash? It collects so much dust." So, in the topic of today's publication, we will consider the meaning of the word "trash"
Between the West Siberian and East European plains stretches a geographic region of Russia called the Urals. It is he who divides the mainland of Eurasia into two conditional parts: Europe and Asia. The area is divided into 5 components: Northern and Southern, Middle, Polar and Subpolar Urals. Sometimes spur regions are distinguished: Pai-Khoi and Mugodzhary. The climate of the Urals will be discussed in this article
22 republics are part of the Russian Federation. Each of the republics is unique and inimitable in its own way, and each can tell a lot
Let's consider the structural features of cycloalkanes. We will reveal the methods of their production, as well as the features of the physical and chemical structure
Today, one can hardly find a person who would not be interested in the question of how to understand chemistry
What is a blockhead? What is the lexical meaning of this word? How many interpretations does this noun have? The article tells about the noun "chump". After reading the article, its interpretation will not raise questions
Africa is the largest continent on the planet, which in terms of size and population ranks second after Eurasia. This part of the world occupies 6% of the Earth's area and more than 20% of the entire land area. The list of African countries consists of 62 units
It's good if a person finally wondered how to say correctly, "calling" or "calling". Unfortunately, confusion in stress for words with the root "zvon" exists even among native Russian speakers. Issues of stress, including in derivative forms from the verb "to call", are de alt with by a special section of linguistics - accentology
The item of material costs in most cases occupies a leading position in terms of share in the cost structure. If the indicator increases in dynamics, it means that raw materials and materials are used inefficiently, and the company needs to review and adjust the costs of raw materials and materials