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Denzig26
@Denzig26
August 2022
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помогите пож!!!!!!¡!!!!!!!!!!!!!!!!
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fatt52
Verified answer
4) Q=I*U*t t=Q/(I*U)=800/(3*220)=1.2 c
===
5) Io=U/R3=6/2=3 A
R12=R1*R2/(R1+R2)=6*12/(6+12)=4 Ом
U12=Io*R12=3*4=12 B
P2=U12²/R2=12²/12=12 Вт
===
6) t=5*60=300 c ΔT=80-20=60° m=1 кг c=4200 Дж/кг*С
P=Q/t=c*m*ΔT/t=4200*1*60/300=840 Вт
======================================
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Answers & Comments
Verified answer
4) Q=I*U*t t=Q/(I*U)=800/(3*220)=1.2 c===
5) Io=U/R3=6/2=3 A
R12=R1*R2/(R1+R2)=6*12/(6+12)=4 Ом
U12=Io*R12=3*4=12 B
P2=U12²/R2=12²/12=12 Вт
===
6) t=5*60=300 c ΔT=80-20=60° m=1 кг c=4200 Дж/кг*С
P=Q/t=c*m*ΔT/t=4200*1*60/300=840 Вт
======================================