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Derivative in physics Derivative of distance with respect to time
The derivative of a coordinate with respect to time is speed. x"(t)=v(t) Physical meaning of the derivative The derivative of speed with respect to time or the second derivative of...
Why did Anna Karenina die?
Yesterday I attended the premiere screening of the film “Anna Karenina” directed by Sergei Solovyov. This tape is part of the “2-Assa-2” duology. It took Sergei Solovyov 10 years of preparation...
Good morning, seventh graders
Slide 1 “Be able to be calm about what you cannot change” Seneca Slide 2 Goal: teach how to cope with stressful situations. Objectives: Give the concept of stress and indicate it...
Francesco Petrarca and Laura de Nov: inspiration of unrequited love Author of sonnets to Laura
He was considered a real magician, although he himself was very reserved about his poetic success, considering his translations from antiquity and works in Latin much more significant....
Number pi - meaning, history, who invented it
March 14, 2012 On March 14, mathematicians celebrate one of the most unusual holidays - International Pi Day. This date was not chosen by chance: the numerical expression π (Pi) -...
UFO invasion.  UFO invasion in Belgium.  UFO shot down a military plane
Hello, friends! Would you like me to show you the best new UFO videos of 2018 (the best so far, since the year has recently begun)? No? But I'll show you anyway. Honestly, no...
GIA online tests in biology
The biology exam is selective and only those who are confident in their knowledge will take it. The Unified State Examination in biology is considered a difficult subject, as it tests knowledge...
Literary and historical notes of a young technician
On February 18, 1855, 37-year-old Alexander II ascended the Russian throne. On February 19, 1861, the emperor signed the Manifesto on the abolition of serfdom. Abolition of serfdom...
Ivan Berestov and Grigory Muromsky (Pushkin's Young Peasant Lady) essay The Image of Lisa of Murom
“The Peasant Young Lady,” a brief summary of which we will consider, is part of a cycle called “Belkin’s Tales” by A.S. Pushkin. These are the first completed by the writer...
Complete collectivization of agriculture: goals, essence, results Why collectivization
The years of revolution are moving further and further away from us, and at the same time the younger generation understands less and less about the events of those years. In history lessons in schools, a certain...
When is flight the best strategy?
Examples of use (description). Fragments from the book: Senger H. von. Stratagems. About the Chinese art of living and surviving. Volume 2. - M.: Eksmo Publishing House, 2004. And also fragments...