#Физика #ЗадачиИзЖизни #УтренняяРазминка Сегодня в качестве утренней разминки забавная задачка по физике. Ответ можно увидеть по кнопке “Лампочка”, проголосовав за один из вариантов в анонимном опросе ниже. Итак, у вас минута на размышление. Делитесь этой задачкой с друзьями!
Нижняя цепь на рисунке сначала висела так же свободно, как и верхняя (лишь её концы были закреплены). Потом нижнюю цепь натянули, потянув её середину вниз. Что при этом произошло с центром тяжести цепи – он поднялся, опустился или остался на месте?
#Физика #ЗадачиИзЖизни #УтренняяРазминка Сегодня в качестве утренней разминки забавная задачка по физике. Ответ можно увидеть по кнопке “Лампочка”, проголосовав за один из вариантов в анонимном опросе ниже. Итак, у вас минута на размышление. Делитесь этой задачкой с друзьями!
Нижняя цепь на рисунке сначала висела так же свободно, как и верхняя (лишь её концы были закреплены). Потом нижнюю цепь натянули, потянув её середину вниз. Что при этом произошло с центром тяжести цепи – он поднялся, опустился или остался на месте?
BY Kvantland | Квантландия | Интересные задачи и не только
The channel appears to be part of the broader information war that has developed following Russia's invasion of Ukraine. The Kremlin has paid Russian TikTok influencers to push propaganda, according to a Vice News investigation, while ProPublica found that fake Russian fact check videos had been viewed over a million times on Telegram. The War on Fakes channel has repeatedly attempted to push conspiracies that footage from Ukraine is somehow being falsified. One post on the channel from February 24 claimed without evidence that a widely viewed photo of a Ukrainian woman injured in an airstrike in the city of Chuhuiv was doctored and that the woman was seen in a different photo days later without injuries. The post, which has over 600,000 views, also baselessly claimed that the woman's blood was actually makeup or grape juice. At this point, however, Durov had already been working on Telegram with his brother, and further planned a mobile-first social network with an explicit focus on anti-censorship. Later in April, he told TechCrunch that he had left Russia and had “no plans to go back,” saying that the nation was currently “incompatible with internet business at the moment.” He added later that he was looking for a country that matched his libertarian ideals to base his next startup. What distinguishes the app from competitors is its use of what's known as channels: Public or private feeds of photos and videos that can be set up by one person or an organization. The channels have become popular with on-the-ground journalists, aid workers and Ukrainian President Volodymyr Zelenskyy, who broadcasts on a Telegram channel. The channels can be followed by an unlimited number of people. Unlike Facebook, Twitter and other popular social networks, there is no advertising on Telegram and the flow of information is not driven by an algorithm. Oleksandra Matviichuk, a Kyiv-based lawyer and head of the Center for Civil Liberties, called Durov’s position "very weak," and urged concrete improvements.
from ru
