Mặt Trăng chuyển động tròn quanh Trái Đất với chu kì 27,3 ngày. Tính bán kính quỹ đạo của Mặt Trăng. Cho biết bán kính của Trái Đất là 6400km, gia tốc rơi tự do ở bề mặt Trái Đất là g=9,8m/s2.

Cau 1 :trường hợp nào dưới đây trọng lực của vật không thực hiện công cơ học A.vật rơi từ trên cao xuống B.vật được ném theo phương thẳng đứng C.vật chuyển đọng trên mặt bàn nằm ngang D.vật trượt trên mặt phẳng nghiêng Và giúp mình giải câu tám trên ảnh

Khi chia một số tự nhiên cho 4 được số dư là 2. Số dư trong phép chia số tự nhiên đó cho 2 là

Nêu khái niệm Công dân , Quốc tịch

Cac ban lam nhanh cho monh nhe minh can gap lam truoc 14 gio 40 nhe

1. If you/ late again / you /lose/ job.  ……………………………………………………………………………………………… 2. I/ not see /anything/because /it/ be /dark.  ……………………………………………………………………………………………… 3. His parents/ be happy/because /he/get /good job.  ……………………………………………………………………………………………… 4. My dog /always bark /if/ hear /strange sound.  ……………………………………………………………………………………………… 5. She/be late/ work/because /miss / bus.  ………………………………………………………………………………………………

II. Circle the word A, B, C or D whose underlined part is pronounced differently from others.(1.0 pt) 1. A. weave B. treat C. thread D. team 2. A. depressed B. embarrassed C. relaxed D. frustrated 3. A. therefore B. throw C. thick D. thought 4. A. hats B. hands C. books D. cats III. Circle the best answer among A, B, C or D to complete the following sentences. (2.0 pts) 1. My father ______ this flower out of a single piece of valuable wood. A. moulded B. carved C. cast D. knitted 2. Minh didn’t know ___________ to find more information about the course. A. what B. which C. how D. while 3. Bac Giang city now is ______ than it was 10 years ago. A. more large B. as large C. the largest D. much larger 4. “ Thanks for your help.” - “ ______” A. It’s my pleasure B. Don’t worry C. Many thanks D. The same to you 5. You should take your shoes ______ when you go into the pagodas. A. on B. up C. off D. in 6. Can you tell me what the greatest ______ in Bac Giang are? A. attractive B. attractively C. attracting D. attractions 7. Binh feels very proud and ______ at the gold medal he has got. A. delighted B. unhappy C. tired D. strong 8. He asked ___________ it was too early to apply for the course. A. when B. if C. for D. that

Các bạn giúp mình làm câu 5 với cảm ơn bạn nhiều

u1 + u3 = 10 u4 + u6 = 80 Khi đó u3 bằng bao nhiêu

Put the words in order so as to make up correct sentences. 1. as / you / tell /I / do. 2. it/ do/ him/ let/ alone. 3. there/ yesterday/ us/ tell / you / what / saw. 4. on/ at / clock / the /wall/ the /look. 5. tie / don’t / my / on / sit. 6. off/ stop / next / the / get / at. 7. some / lending / you / would / me / mind / money. 8. him / knows / ask / the / if / professor/ he. 9. any / come / but / Sunday / day. 10. could / slowly / please / you / more / speak / a little. 11. a rule/ o' clock / eight / as / he / at / up / gets. 12. he / ten / ready / minutes / breakfast / in / for / is. 13. at / lecture / first / begins / the / o'clock / eight. 14. will / in / he / Hai Phong/ go / summer / to. 15. the/ stands / on / Thames/ London/ two/ equal / it / into / divides/ which / parts. 16. Parliament/ is / by / governed / England . 17. nine / over / is / population/ million/ its/ people 18. on / September / begins / 1st / year/ the / school / new / usually 19. remembered/ Vietnam/ he/ to / trip/ his. 20. he/ mother / his / a /sent / present/.