Một xe máy chuyển động lên dốc thì sinh ra một lực là 1200 N và lên hết dốc dài 10 m hết thời gian là 5 giây. a) Tính công của xe máy đó b) Nếu xe máy

Một xe máy chuyển động lên dốc thì sinh ra một lực là 1200 N và lên hết dốc dài 10 m hết thời gian là 5 giây. a) Tính công của xe máy đó b) Nếu xe máy tăng vận tốc gấp 2 lần thì công sinh ra là bao nhiêu. c) Tính công … Đọc tiếp

EXERCISE I : Write who, that, which, or nothing to complete these sentences : 1. Have you got the money ___________ I lent you yesterday ? 2.Peter, __

EXERCISE I : Write who, that, which, or nothing to complete these sentences : 1. Have you got the money ___________ I lent you yesterday ? 2.Peter, ___________ I had seen earlier, wasn’t at the party. 3. This is the machine ___________ cost half a million pounds. 4. Mary, ___________ had been listening to the … Đọc tiếp

5. The woman looked very sad that her son failed in the exam.  The woman _______________________________________________________ 6. The rain was ve

5. The woman looked very sad that her son failed in the exam.  The woman _______________________________________________________ 6. The rain was very heavy, so the men stopped working.  The men ___________________________________________________— 7. Mrs. Mi has never gone abroad before.  Mrs. Mi wishes ________________________________________________________– 8. It would be better if you stopped playing games … Đọc tiếp

1. The actor who acted in the film ” Crazy Coconut ” won are Oscar. ⇒ 2. The old man who is going for a walk in the park is my stepfather with his d

1. The actor who acted in the film ” Crazy Coconut ” won are Oscar. ⇒ 2. The old man who is going for a walk in the park is my stepfather with his dog. ⇒ 3. The worker who was seriously sick is in the hospital now. ⇒ 4. The poems which were written … Đọc tiếp