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dimendrol
@dimendrol
July 2022
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Номер 1 и 2. Заранее спасибо
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Verified answer
1)
**********
R2 = 15 Ом
I2 = 2 A
R3= 10 Ом
R1=4 Ом
P1=?
*********
U2=I2*R2=2*15=30 B
U3=U2=30 B
I3=U3/R3 = 30/10=3 A
I1=I2+I3=2+3=5A
P1=I1^2*R1=5^2*4 = 100 Вт - это ответ
************
2)
Q=m*c*(T2-T1)=N*t
N=m*c*(T2-T1)/t=1*4200*(80-20)/(5*60) Вт =
840
Вт
2 votes
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Answers & Comments
Verified answer
1)**********
R2 = 15 Ом
I2 = 2 A
R3= 10 Ом
R1=4 Ом
P1=?
*********
U2=I2*R2=2*15=30 B
U3=U2=30 B
I3=U3/R3 = 30/10=3 A
I1=I2+I3=2+3=5A
P1=I1^2*R1=5^2*4 = 100 Вт - это ответ
************
2)
Q=m*c*(T2-T1)=N*t
N=m*c*(T2-T1)/t=1*4200*(80-20)/(5*60) Вт = 840Вт