-
Человек проехал первую половину времени всего движения на автомобиле со скоростью 100 км/ч, а вторую половину времени - на велосипеде со скоростью 20 км/ч. Какова средняя скорость движения на всем пути?
-
Предмет:
Физика -
Автор:
biancaarmstrong - 5 лет назад
-
Ответы 1
-
vср= s/t;t=t1+t2;t1=s/2/100=s/200t2=s/2/20=s/40v=s/6s/200=200/6=33.(3)
-
Автор:
fergiehrnx - 5 лет назад
-
0
-
-
Добавить свой ответ
Еще вопросы
-
А1. This is Tom’s room, _________?
1) isn’t it
2) isn’t this
3) isn’t there
4) it isn’t
A2. I don’t know if she __________me about it.
1) ask
2) asking
3) asks
4) will ask
A3. This text __________ at the previous lesson.
1) translated
2) is translated
3) has translated
4) was translated
A4. He’s just built a tower, _____________ ?
1) isn’t he
2) hasn’t he
3) he isn’t
4) has he
A5. Mary offers__________ some sandwiches.
1) make
2) made
3) to make
4) makes
A6. Jerry asked ____________ snow the next week.
1) it would
2) will it
3) if it will
4) if it would
A7. Neither Kate nor her friends________ the game.
1) never play
2) don’t play
3) plays
4) play
A8. Do you like__________building at the end of the street?
1) this
2) these
3) that
4) those
A9. Boys, you’ll have to do everything _________.
1) yourself
2) yourselves
3) ourselves
4) themselves
A10. Tom is the best pupil. He ___________the best pupil in his class.
1) always
2) will be
3) has always been
4) was always
A11. The Browns like their house. They ________it since 1997.
1) have
2) had
3) are having
4) have had
A12. What are your plans? When ___________ visit London?
1) are you going to
2) are you
3) do you
4) will you
A13. I haven’t done my homework_____________.
1) already
2) yet
3) since
4) always
А14. Bob won’t go there___________ .
1) neither
2) also
3) too
4) either
A15. When I came in he ____________ to the teacher.
1) used to listen
2) listened
3) was listening
4) is listening
Часть 2
B1-B5. Прочитайте текст и выберите правильный ответ.
I go shopping.
My name is Katya. I am a student. In two years I will become a teacher of biology. My profession is my hobby as well. I visit the bookstores of my town regularly and buy new books in biology. It helps me to learn all the novelties in my profession. I often discuss the books that I have bought, with my friends at the university. When I go shopping, I buy not only books, but also some other things, that I need. I live in Volgograd. It is a large city. There are a lot of shops here. If I go shopping, it is not easy for me to choose the right place at once. I am fond of fashion and always try to buy new clothes in order to look fashionable and attractive. It is not an easy task. I have to try on a lot of dresses, skirts and blouses till I choose what I really like. If I need a dress for a special occasion, I go to a shop with my best friend Olya. She is always ready to help me and I try to follow her advice. Sometimes Olya and I go shopping just for fun. We walk along the streets, visit different kinds of shops and buy some trifles that raise our mood. We may buy something tasty and organize a small party for our friends. I should say that shopping is my hobby. It is the best treatment for me when I am in a bad mood.
B1. Katya is a teacher of biology.
1) True
2) False
B2. Katya buys only books when she goes shopping.
1) True
2) False
B3. Katya lives in Volgograd.
1) True
2) False
B4. Katya and Olya always go shopping just for fun.
1) True
2) False
B5. Shopping is the best treatment for Katya.
1) True
2) False
-
Предмет:
Английский язык -
Автор:
caseybowers - 5 лет назад
-
Ответов:
2 -
Смотреть
-
-
напишите плиз.12-7 строчек о чём я разговариваю за обеденным столом с родителями.
-
Предмет:
Русский язык -
Автор:
lianapkuc - 5 лет назад
-
Ответов:
1 -
Смотреть
-
- Назовите известные вам приборы, которые используются для проведения метеорологических наблюдений. Дайте характеристику
-
X:102=102 помогите пожалуйста , решить уравнение :)
-
Предмет:
Математика -
Автор:
aliyarirt - 5 лет назад
-
Ответов:
0 -
Смотреть
-
Топ пользователей
-
Fedoseewa27
35934 -
Askold
2792 -
Pikachu
2228 -
hobbesbowers
2116 -
kaylynnbarron676
1818 -
女fei
1240 -
yulia-kaplina
1158 -
Poinntt
946 -
Bars
930 -
Queenmagic18
770
How much to ban the user?
1 hour
1 day
100 years