m1=2 кг Δt=100-12=88 °C η=0.25 (25%) c=4200 Дж/(кг*С) q=43*10^6 Дж/кг m2=?
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η=Q1/Q2
Q1=c*m1*Δt
Q2=q*m2
m2=c*m1*Δt/(η*q)=4200*2*88/(0.25*43*10^6)≈0.069 кг (69 г)
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m1=2 кг Δt=100-12=88 °C η=0.25 (25%) c=4200 Дж/(кг*С) q=43*10^6 Дж/кг m2=?
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η=Q1/Q2
Q1=c*m1*Δt
Q2=q*m2
m2=c*m1*Δt/(η*q)=4200*2*88/(0.25*43*10^6)≈0.069 кг (69 г)
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