tính thể tích a) N phân tử khí H2

1 thửa ruộng hình chữ nhật có chu vi bằng chu vi cái sân hình vuông có cạnh 120m. Biết rằng nếu giảm chiều dài của thửa ruộng đi 20m và tăng chiều rộng lên 20m thì thửa ruộng trở thành hình vuông. Tính diện tích thửa ruộng đó.

cho mình hỏi là nếu kéo một vật 3kg bằng lực kéo từ dưới lên, kéo bằng ròn rọc cố định, bằng ròng rọc động, mặt phẳng nghiêng với đòn bẩy và kéo lên cao 9m thì sẽ có công bao nhiêu?

I. Choose the word or phrase that best completes each unfinished sentence below or substitues for the underline word orphrase 1. ___________you like to go fishing with us? A. Will B. Would C. Should D. Can 2. He__________ to read book in the library. A. likes C. interestedin B. enjoys D. all arecorrect 3. He likes playing sports____________ soccer and tennis. A. such as C. like B. such like D. A & C arecorrect 4. I want tothank you ___________helping me. A. of B. about C. for D. to 5. She is very sporty. A. good atsport C. bad atsport B. interested insport D. A & B are correct 6. Pete is goingto learn__________. A. swim C. swimming B. toswim D. A & C are correct 7. Let’s go to my house. A. Let we B. Let us C. Let has D. Let is 8. Let’s________ and talk about our plans for the weekend. A. gettogether C. put away B. pick up D. look for 9. Will you get some bread when you go shopping? A. eat B. buy C. bring D. choose 10. Your grades are poor. I think you___________ study hard A. should B. can C. may be D.

Công thức tính cột xếp loại ạ Giúp mình với

cho A(2,5);B(3;1);C(-2;0).tìm M nằm trên denta: y=x-2 sao cho M,C,B thẳng hàng. giúp mình với

Mn giải giúp e với ạ:( E cần gấp ạ:(

Giúp mình bài 8 vs ạ. Mình cảm ơn

Các bn lm cho mk bài này với ak ! Mk cảm ơn nhiều ak !

Sửa lỗi ngữ pháp bài viết I am living in a nuclear family with my parents and my older brother. So i will talk about my type of family that i'm living in what i like and dislike. Nuclear family is family that two generations are living under the same roof. Traditionally, it means that the parents are living with their children. I like my type of family because i learn a lot of lessons from my parents about kindness, responsibility and honesty. Firstly, living in nuclear family is comfortable because there aren't many different viewpoints so conflicts don't hapeen. Secondly, everyone will share the household chores equally and finish it . Thirdly, all family members have their own space to work or relax. However, when my brother leaves home and goes to school in city. Sometimes, i feel lonely- that is one of the disadvantages which i don't like about living in nuclear family