Трамвайный вагон от остановки движется с постоянным ускорением 2 м/с2 в течение 8 с при силе тяги 28 к Н и КПД 88 %. Какова сила тока в момент окончания спуска, если напряжение в линии 550 В
1 When did you leave school? 2. How long has she been feeling unwell? 3. I've never met such a nice person before. 4. I have been waiting for you since four o'clock. 5. She has never written a letter by hand since she bought a computer. 6. I wonder where you have been all this time. 7. I have been learning English for five years. 8. You never know how he is going to react. 9. She has tripped over the cat and nearly fell over. 10. Look! I have found a ten-pound note! - Where did you find it? 11. Margaret is taking driving lessons now. 12. In recent years terrorism has become a greater threat. 13. The rain came suddenly and it has soaked all the washing. 14. Ever since we met, you have never asked me what I prefer to do. 15. How long have you lived here? 16. I have been interested in sports since my childhood. 17. What have you been doing since you left Cambridge?
1.No doubt, our health depends on our way of life. 2.That means that we must take care of our health. 3. I think the saying “Health is above wealth” is true. 4.Those who want to be healthy must try hard. 5.They should eat only healthy food. 6.Of course they should do sports and find time for morning exersices. 7.Remember: Movement is life! 8.They shouldn't eat too much fried food and fast food like chips and burgers, but they should eat more vegetables and fruits. 9.It's very useful to swim and to spend much time in the open air. 10. It's necessary to have rest and sleep enough every day.
2. How long has she been feeling unwell?
3. I've never met such a nice person before.
4. I have been waiting for you since four o'clock.
5. She has never written a letter by hand since she bought a computer.
6. I wonder where you have been all this time.
7. I have been learning English for five years.
8. You never know how he is going to react.
9. She has tripped over the cat and nearly fell over.
10. Look! I have found a ten-pound note! - Where did you find it?
11. Margaret is taking driving lessons now.
12. In recent years terrorism has become a greater threat.
13. The rain came suddenly and it has soaked all the washing.
14. Ever since we met, you have never asked me what I prefer to do.
15. How long have you lived here?
16. I have been interested in sports since my childhood.
17. What have you been doing since you left Cambridge?
2.That means that we must take care of our health.
3. I think the saying “Health is above wealth” is true.
4.Those who want to be healthy must try hard.
5.They should eat only healthy food.
6.Of course they should do sports and find time for morning exersices.
7.Remember: Movement is life!
8.They shouldn't eat too much fried food and fast food like chips and burgers, but they should eat more vegetables and fruits.
9.It's very useful to swim and to spend much time in the open air.
10. It's necessary to have rest and sleep enough every day.