\(R_{tđ}=\dfrac{R_1\cdot R_2}{R_1+R_2}=\dfrac{24\cdot12}{24+12}=8\Omega\)

\(I=\dfrac{U}{R}=\dfrac{12}{8}=1,5A\)

\(P=\dfrac{U^2}{R}=\dfrac{12^2}{8}=18W\)

\(Q_{tỏa1}=A_1=U_1\cdot I_1\cdot t=12\cdot\dfrac{12}{24}\cdot1\cdot3600=21600J\)

\(Q_{tỏa2}=A_2=U_2\cdot I_2\cdot t=12\cdot\dfrac{12}{12}\cdot1\cdot3600=43200J\)

Bạn có thể giúp mình làm luôn câu c, d được không ạ

em chịu_{em thua}

cái gì đây?

uses crt;

var st:string;

d,i,t,x,y,a,b:integer;

begin

clrscr;

readln(st);

d:=length(st);

for i:=1 to d do write(st[i]:4);

writeln;

t:=0;

for i:=1 to d do

begin

val(st[i],x,y);

t:=t+x;

end;

writeln(t);

val(st[d],a,b);

if (a mod 2=0) then write(1)

else write(-1);

readln;

end.

#include <bits/stdc++.h>

using namespace std;

long long a[1000],i,n,t,dem,t1;

int main()

{

cin>>n;

for (i=1; i<=n; i++) cin>>a[i];

t=0;

for (i=1; i<=n; i++) if (a[i]%2==0) t+=a[i];

cout<<t<<endl;

t1=0;

dem1=0;

for (i=1; i<=n; i++)

if (a[i]<0)

{

cout<<a[i]<<" ";

t1+=a[i];

dem1++;

}

cout<<endl;

cout<<fixed<<setprecision(1)<<(t1*1.0)/(dem1*1.0);

return 0;

}

#include <bits/stdc++.h>
using namespace std;
long long a,b;
//chuongtrinhcon
long long gcd(long long a,long long b)
{
    if (b==0) return(a);
    return gcd(b,a%b);
}
//chuongtrinhchinh
int main()
{
    cin>>a>>b;

cout<<max(a,b)<<endl;

cout<<gcd(a,b)<<endl;
    if ((a>0 && b>0) or (a<0 && b<0)) cout<<a/gcd(a,b)<<" "<<b/gcd(a,b);
    else cout<<"-"<<-a/gcd(-a,b)<<" "<<b/gcd(-a,b);
    return 0;
}

My taste in art is not the same as my sister's

I think romantic films aren't as interesting as action films

I don't speak Japanese and my new friend doesn't, either

Nester goes climbing less than before

He's had a cold for 2 days because he didn't wear enough clothes

I will spend an hour gettign this task done

My father prefers tea to coffee

Eat less or you will be obese

1 B. other (forms ở số nhiều $\rightarrow$ other forms)

2 D. important (đứng trước danh từ form, chọn tính từ hợp nghĩa)

3 A. sung (cấu trúc bị động đi kèm composed and sung)

4 A. ago (hundreds of years ago - hàng trăm năm trước)

5 C. who (mệnh đề quan hệ chỉ người who originally composed them)

6 C. instruments (nhạc cụ: flute, accordion, etc.)

7 D. also (được gọi là... cũng được gọi là...)

8 A. bad (protest songs phàn nàn về những điều tồi tệ: bad things)

1 He didn't remember anything about the event, and neither did she. (Hoặc: He didn't remember anything about the event, and she didn't either.)

2 She doesn't sing as beautifully as her sister.

3 I think no students in the class are cleverer than Nick. (Hoặc: I think no students in the class are as clever as Nick.)

4 I go to the same school as my cousin.

5 My friend will never have such a chance again, and neither will I. (Hoặc: My friend will not have such a chance again, and I won't either.)

6 For me, an ape isn't different from a monkey.

7 Jack doesn't sleep as much as he should.

8 By using public transport more, we can reduce air pollution.

9 Her father has been working as a television reporter since she was born. (Hoặc: Her father has been a television reporter since she was born.)

10 Last year he worked harder and more carefully than he does this year.

Thứ tự sắp xếp: 3 – 2 – 4 – 1 – 6 – 5