Huhu sao ko ai tin e vậy

tui tên Minh Anh chớ trương, là ông hả

Câu hỏi đúng không em?

em hỏi cho nó biết thôi chứ có trong sách đâu

I. Rules of paripation "Help me solve maths"

1. Don't put miscellaneous questions on the forum, only post arles that you can't solve or good questions on the forum;

2. Do not answer miscellaneous, does not match the question content on the forum.

3. Do not "True" on miscellaneous answers to fraud points.

you có phải ng VN ko thế ! nếu là ng VN lm ơn ns tiếng việt nhé

\(R_{tđ}=R_1+R_2+R_3=6+12+20=38\Omega\)

\(I_3=I=\dfrac{U}{R}=\dfrac{36}{38}=\dfrac{18}{19}A\)

\(U_2=I_2\cdot R_2=\dfrac{18}{19}\cdot12=\dfrac{216}{19}V\)

\(P=U\cdot I=36\cdot\dfrac{18}{19}=\dfrac{648}{19}W\)

\(A=P\cdot t=\dfrac{648}{19}\cdot30\cdot60=61389,5J\)

\(MCD:R1ntR2ntR3\)

\(=>R=R1=R2=R3=6+12+20=38\Omega\)

\(=>I=I1=I2=I3=U:R=36:38=\dfrac{18}{19}A\)

\(=>U2=I2\cdot R2=\dfrac{18}{19}\cdot12=\dfrac{216}{19}V\)

\(=>A=UIt=36\cdot\dfrac{18}{19}\cdot\dfrac{30}{60}=\dfrac{324}{19}\)Wh

tự lên mạng mà xem

hok tốt

ko rảnh

hay dc

V

2 The alpine scenery (land) is very dramatic. (Cần danh từ chỉ phong cảnh)

3 Women who are slimming can never enjoy a meal without being afraid of disorganizing (organize) their diet.

4 She always listens attentively (attention) to what she is told.

5 He was informed (information) of the consequences in advance. (Cấu trúc bị động: be + V3/ed)

6 The professor explained his ideas with great clarity (clear). (Sau "great" cần một danh từ)

7 The cost of the carriage (carry) must be repaired by the buyer.