решите задачу пожалуйста по физике. Created by KejVan. fizika-ru

решите задачу пожалуйста по физике...

KejVan @KejVan

November 2021 1 25 Report

решите задачу пожалуйста по физике

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fatt52

Verified answer

P=14.7*10^3 Вт t=3600 c m=8,1 кг q=3.3*10^7 Дж/кг T1=473 K T2=331 K η1=? η2=?
===
η1=P*t/(q*m)=14.7*10^3*3600/(3.3*10^7*8.1)=0.2 (20%)
η2=(T1-T2)/T1=(473-331)/473=0.3 (30%)
===============================

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