На спиртівці нагріли 300г води від 15(градусів) до 75(градусів) по С. Визначте ККД нагрівника, якщо на нагрівання витрачено 8г спирту

vexzt2009 @vexzt2009

June 2023 1 5 Report

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aleksabkm447 ККД = (Ап / Аз) * 100%
Ап = cmΔt
Аз = qm₂
ККД = cmΔt * 100% / qm₂ = 4200 * 0,3 * 60 * 100 / 29000000 * 0,008 = 7560000 / 232000 = 32,5862 ≈ 32,6 %

vexzt2009 А у этих "А" всегда такая формула?

aleksabkm447 да

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