Chủ đề:
Bài 1. Điện tích. Định luật Cu-lôngCâu hỏi:
Cho 2 điện tích q1 = 3.10-8C q2 = -2.10-8 C đặt tại A và B với AB = 50cm . Tính lực tổng hợp tại q3= 10-8C đặt tại M trong trường hợp :
MA= 50cm ; MB= 100 cm
EXERCISE 6: Put these sentences into the passive
1. Someone will clean the room today. =>
2. Someone might steal the car. =>
3. They had to cut down that tree.=>
4. They're going to demolish the old houses.=>
5. We can't restore the picture. =>
6. You must make an appointment in advance.=>
7. I don't want people to make me a fool. =>
8. Someone has to look after the garden.=>
9. He wants everybody to serve him. =>
10. They're going to interview him next week=>