Mình giải rồi đó bạn, đáp án là 0,2m

P=10.m=76.10=760N

50cm=0,5m

Diện tích mặt bị ép là:

S=F/p<=>P/p<=> 760/3800=0,2m2

Vì vật có dạng HHCN nên chiều dài là

0,2/0,5=0,4m=40cm

1. What are we playing now?

2. How much beef doyou need?

3. What is his job?

4. What do you like?

5.What is your favorite sport?

6.How often does she go to the zoo?

7.How does she feel?

8.How much is this book cost?

1.B

2. We stay in touch by letter

3. Kate's going to tell her younger sister about her trip to Japan

4.umbrella

5.language

Cái này bạn lấy trên mạng à

http://nguyenongiabao.com/nguyenongiabao/entry/showglobal/pr_id/3871869

http://d.violet.vn//uploads/resources/present/3/871/869/preview.swf

1.all evening./ Many/ old people/ sit and watch TV/ just

-Many old people just sit and watch TV all evening

2.in the evening./ return/ They always/ at 9.30/ home

-They always return home at 9.30 in the evening

3.Football is one of the most famous ____sport_____ in the world.

4.'Animal Land' zoo is o_______ today.

5.My mother has ___rỗng_____ long hair. ( the, a, an, O )

6.a friend/ Clara/ for dinner./ sometimes/ goes out with

-Clara somes.... goes..... with a friend for diner

7.than/ Nicky/ has/ her sister./ fewer holidays

Nicky has fewer .... than ..... her sister

8.People like sleeping in thent when they go _______

9.I' ve got a _____ of postcards.

10.She buys me a hat, ............. a cap. ( no, not, none, isn't )

11.The monkey has got a banana _____ his hand.

12.early in the morning/ They'll/ to catch/ the train./ have to leave

13.are going/ the countryside/ for sightseeing./ Her parents/ to

14.Which ocean does the Amazon river flow __________?

15.English books are on the __________ to the right.

16.The opposite of "slow" is .................. ( fast, down, ahead, up )

17."What's the matter with you?" also means "..."

chọn A.What's wrong with you? B.What's the wrong with you?

c.What's problem with you? D.What's the problem to you?

18.to the party./ for inviting/ thanks me/ her/ She

She thanks me for .... her to the party

19.Mrs Jones?/ your bags,/ with/ help you/ Can I

Can I help you with yours bags, MrsJone

20.There's no milk ___________. You should go to the market to buy some.

Hầy, nhiều quá, toàn ioe hả , lát làm tiếp

(HK1+HK2x2 )chia 3