user-avatar
th6564791
2 năm trước
Cho 1 lò xo nằm ngang o trang thai ban dau ko bị biến dang .khi tác dung luc 10N vào lo xo cũng theo phương ngang ta thay nó dan dược 3,5cm Tính thế năng đan hồi của lo xo khi nó dãn 5cm
Thích Trả lời Chia sẻ

Các câu hỏi liên quan

III. Put the verbs in brackets into the past simple or the present perfect. 1. A: (you/ ever/ meet) anyone famous? B: Yes, last summer I (sit) next to Brad Pit on a plane to LA. 2. A: How long ago (you/ start) painting? B: Ten years ago. I (recently/ complete) a painting that the National Gallery (ask) me to do a year ago. 3. A: Last night, I (see) the latest James Bond film. B: Oh, I (already/ see) it twice. 4. A: Do you know that Mrs Janet (work) here for sixteen years? B: I thought she (start) working here ten years ago. III. Put the verbs in brackets into the correct verb form. 1. I (have)___________ dinner when his friend called. 2. Joan (travel)____________ around the world. 3. We (not begin)__________ to study for the test yet. 4. Don’t get on a bus while it (run) ______________ . 5. I (invite)______________ them to my birthday party yesterday, however, they (not come) . 6. Look! Somebody (clean)___________ the room. 7. My brother (begin)____________ looking for a job in January. 8. Timson (make) ____________________ 13 films and I think her latest is the best. 9. She (cook)______________ at the moment. That’s why she can’t answer the phone. 10. She doesn’t mind (go)______________ out in the evening. 11. I (not see)____________ him since we (leave)________ school. 12. Football (be)____________________ my favourite sport. I like (play)_________ it in my free time. 13. Jane (leave)________________ just a few minutes ago. 14. She (be) ________________ extremely quiet since her husband died.

2018 © Loga - Không Ngừng Sáng Tạo - Bùng Cháy Đam Mê
Loga Team