Mọi người giúp mình vớii mình cần gấp...
Đọc tiếp
Mọi người giúp mình vớii mình cần gấp ạ
K
Khách
Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
Những câu hỏi liên quan
10 tháng 7 2021
ex 4.
1 seeing
2 to pay
3 sneezing
4 to clean up
5 to work
6 cutting
7 to iron - ironing
8 driving
9 to have
10 to invite
11 being
12 to find
13 holding - drinking
14 to repair
15 explaining
ex 5.
2. Pamela continued dancing for an hour.
3. I'd rather sit in the front row.
4. Richard expects to do well.
5. What do you intend to do for the summer?
6. I hate clearing up my room.
7. Helen agreed to go to the party with me.
8. My boss refused to let me leave early.
9. I really look forward to hearing from you soon.
10. What do you want to do this evening?
11. The manager promised to speak to you about this.
12. Fiona succeeded in persuading her father to change his mind.
13. Where do you feel like going this evening?
14. The detective happened to discover the secret.
15. It was very late, but she went on tidying up the kitchen.
ex6.
1. The room will be cleaned today.
2. The car might be stolen.
3. That tree had to be cut down.
4. The old houses are going to be demolished.
5. The picture can't be restored.
6. An appointment must be made in advance.
7. I don't want to be made a fool.
8. The garden has to be looked after.
9. He wants to be served.
10. He is going to be interviewed next week.
5 tháng 12 2021
\(R_{tđ}=\dfrac{R_1\cdot R_2}{R_1+R_2}=\dfrac{24\cdot12}{24+12}=8\Omega\)
\(I=\dfrac{U}{R}=\dfrac{12}{8}=1,5A\)
\(P=\dfrac{U^2}{R}=\dfrac{12^2}{8}=18W\)
\(Q_{tỏa1}=A_1=U_1\cdot I_1\cdot t=12\cdot\dfrac{12}{24}\cdot1\cdot3600=21600J\)
\(Q_{tỏa2}=A_2=U_2\cdot I_2\cdot t=12\cdot\dfrac{12}{12}\cdot1\cdot3600=43200J\)
PA
Mọi người giải giúp mình với ạ mình đang cần gấp ạ, giúp mình nhé
0
NH
1
2 tháng 12 2021
Bài 3.
Định luật ll Niu-tơn:
\(\overrightarrow{F}+\overrightarrow{F_{ms}}=m\cdot\overrightarrow{a}\)
\(\Rightarrow F-F_{ms}=m\cdot a\)
Gia tốc vật:
\(a=\dfrac{F-F_{ms}}{m}=\dfrac{4,5-\mu mg}{m}=\dfrac{4,5-0,2\cdot1,5\cdot10}{1,5}=1\)m/s2
Vận tốc vật sau 2s:
\(v=a\cdot t=1\cdot2=2\)m/s
NL
2
? Tiếng gì đây , giống tiếng Trung quá ta
;-; :)?? 😞🤘🏻 :v