Вопрос по физике:

Колесо велосипеда имеет радиус 25 см. С какой скоростью едет велосипедист, если колесо вращается с частотой 2 Гц? Ответ

Вопрос по русскому языку:

Вопрос по английскому языку:

Раскройте скобки, употребляя глаголы в Present Perfect, Present Progressive, Present Simple или Past Simple. 1� Hi, Tom� Let’s have lunch together� — No, thanks� I already (to have) lunch� 2� What the weather (to be) like? It is still (to rain)? — No, it (to stop) raining� 3� Please give me a pencil, I (to lose) mine� 4� Where Peter (to be)? — He (to go) home� He (to leave) the room a minute ago� 5� What you (to read) now? — I (to read) “Jane Eyre” by Charlotte Brontё� 6� They (to read) “Ivanhoe” by Walter Scott a month ago� What about you? (…) you read “Ivanhoe”? 7� He (to be) crazy about computer games� It’s 11 a�m� Look he (to play) a computer game now� 8� She (to like) to read love stories� She (to read) a lot of books� She (not to read) so much last year� 9� He (to be) an artist� Now he (to paint) a picture in water-colours� 10� My watch (to stop)� There (to be) something wrong with it� 11� You (to see) Michael? — Yes, I (to see) him at the university an hour ago�" – материал взят с сайта Студворк https://studwork.org/english/1086738-raskroyte-skobki-upotreblyaya-glagoly-v-present-perfect-present-progressive-present-simple-ili-past-simple

Вопрос по математике:

Вопрос по литературе: