Саме час запостити якусь цікаву задачу перед всеукром з фізики
Точкове тіло відпускають над похилою площиною без початкової швидкості. Опору повітря нема, відбивання тіла від площини абсолютно пружні. Доведіть, що фокуси усіх параболічних траєкторій утворених між кожними двома послідовними відбиттями лежать на одній прямій.
Саме час запостити якусь цікаву задачу перед всеукром з фізики
Точкове тіло відпускають над похилою площиною без початкової швидкості. Опору повітря нема, відбивання тіла від площини абсолютно пружні. Доведіть, що фокуси усіх параболічних траєкторій утворених між кожними двома послідовними відбиттями лежать на одній прямій.
BY скучні задачі
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Artem Kliuchnikov and his family fled Ukraine just days before the Russian invasion. This ability to mix the public and the private, as well as the ability to use bots to engage with users has proved to be problematic. In early 2021, a database selling phone numbers pulled from Facebook was selling numbers for $20 per lookup. Similarly, security researchers found a network of deepfake bots on the platform that were generating images of people submitted by users to create non-consensual imagery, some of which involved children. 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. Telegram, which does little policing of its content, has also became a hub for Russian propaganda and misinformation. Many pro-Kremlin channels have become popular, alongside accounts of journalists and other independent observers. At its heart, Telegram is little more than a messaging app like WhatsApp or Signal. But it also offers open channels that enable a single user, or a group of users, to communicate with large numbers in a method similar to a Twitter account. This has proven to be both a blessing and a curse for Telegram and its users, since these channels can be used for both good and ill. Right now, as Wired reports, the app is a key way for Ukrainians to receive updates from the government during the invasion.
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