THE (not wake up) late, things (be) OK 21 was in a hurry and I spilled my tea over my clean white shirt. If 1 (not be) in a hurry, I (not spill) my tea over my shirt. 3 1 ran and ran, but I missed the bus. If I
(not wake up) late, I (not spill) my tea and I (not miss) the bus. 4 1 was late for work. My boss was angry. If I (not miss) the bus, I (not late) for work
and my boss (not be) angry 5 Because I was late for work, my boss said I must stay late. If I (not late) for work, I (not stay) late.
61 stayed at work until 7 o'clock. My family was worried about me. If I (not wake up) late, I (not be) late for work. If I (not be) late for work, I (not stay) late. If (not stay) late, I (not get) home late
NÓTY family (not be) worried.
Ммеди=0.5 кг
Мводы=2 кг
t0=10°C
Mспирта=0.05 кг
КПД=50%
Находим энергию, которую получим при сжигании спирта
Qc=r·Mспирта·50%/100
r = 27000000 Дж/кг – удельная теплота сгорания спирта
Qc=685000 Дж
Своды=4200 Дж/кг·град – удельная теплоемкость воды
Смеди=400 Дж/кг·град – удельная теплоемкость меди
Составим уравнение теплового баланса
Qc=Своды·Мводы·Δt+Смеди·Ммеди· Δt
Δt= Qc/( Своды·Мводы+Смеди·Ммеди)
Δt= 685000/( 4200·2+400·0.5)
Δt = 78.5°
Мы можем нагреть на 78.5° До температуры 88.5°С
Объяснение: