Làm giùm nha ._.
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6B
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18 tháng 9 2021
Bài 4:
Điện trở tương đương :
\(R_{tđ}=\dfrac{U}{V}=\dfrac{12}{0,4}=30\left(\Omega\right)\)
Ta có: \(R_{tđ}=R_1+R_2\Leftrightarrow R_1=R_{tđ}-R_2=30-20=10\left(\Omega\right)\)
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One day I usually have free time in the evening, after finishing my homework. I love reading novels because it often helps me with the plot. I spend most of my free time reading. My favorite kind of books are books about love. Sometimes I prace drawing. I usually draw characters from comic books. When I prace drawing, I feel I can relieve the pressure of studying. Drawing is also my second hobby. On weekends I often go to swimming lessons, it is very useful and helps me to have a healthy body.. I think I have used my free time properly. How about you?