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The Green Movement

Green activities are simple actions to protect the environment. We can follow the 3Rs: Reduce waste, Reuse old things, and Recycle plastic or paper. Other activities include planting more trees and using public transport instead of motorbikes.

People choose a green lifestyle because our planet is facing serious pollution and climate change. We need to act now to save natural resources for the future.

The benefits of this movement are huge. It helps clean the air, reduces waste in landfills, and even saves us money by using less electricity and water.

I would definitely join the green movement. Right now, I am trying to limit single-use plastics and always turn off the lights when leaving a room. I believe that small changes can make a big difference for our world.

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

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

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

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

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

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

#include <iostream>
using namespace std;

int main() 

{

         int N, sum = 0, num;

         float average;

         cout << "Nhap so phan tu cua day: ";

         cin >> N;

        // Vòng lặp để nhập dữ liệu cho các phần tử trong dãy

       for (int i = 0; i < N; i++) {

              cout << "Nhap phan tu thu " << i+1 << ": ";

              cin >> num;

              sum += num; // tính tổng của dãy

}

// tính trung bình cộng của dãy

average = (float) sum / N;

cout << "Trung binh cong cua day la: " << average;

return 0;

}

Bài 5: 

a: BC=10cm

b: HA=4,8cm

HB=3,6(cm)

HC=6,4(cm)

Bạn ơi, làm như vậy thì quá ngắn rồi ạ, với lại bạn làm thiếu mất đề bài của mình rồi 

khó thế

70,80