Потребуется 3 470 400 Дж или 3 470,4 кДж или 3,4704 МДж
Объяснение:
Дано:
m₁ = 1.5 кг
с₁ = 920 Дж/(кг· град) - удельная теплоёмкость алюминия
m₂ = 10 кг
c₂ = 4200 Дж/(кг· град) - удельная теплоёмкость воды
t₁ = 20°
t₂ = 100° - температура кипения воды
Найти:
Q - энергию, необходимую для нагревания воды до температуры t₂
Нагревать приходится не только воду, но и кастрюлю, поэтому
Q = m₁ · c₁ · (t₂ - t₁) + m₂ · c₂ · (t₂ - t₁) =
= 1.5 · 920 · (100 - 20) + 10 · 4200 · (100 - 20) =
= 110 400 + 3 360 000 = 3 470 400 (Дж) = 3 470,4 кДж
1. Sally was 18 when she became one of the best young tennis players in the USA.
2. Literature - is one of Sally Ride’s favorite subjects.
3. Sally was engaged in learning astrophysics in college.
4. She was a specialist in astrophysics.
5. She learned to control military jets as part of her training in Houston.
6. Sally spent six day in space flying around the earth.
Объяснение:
She was ranked number eighteen among the best young tennis players in the country when she was 18."-1 вопрос,получается ответ вместо пропуска 18
"She liked great literature too."-2 вопрос ответ literature
When she went to college, she studied astrophysics." - 3 вопрос,ответ "college"
She was a specialist in astrophysics." - ответ на 4 вопрос "astrophysics"
She studied at the Johnson Space Center in Houston, Texas. She learnedhow to fly military jets as part of her training."- ответ на 5 вопрос "military jets as part of her training"
Sally ride spent six days in space orbiting the earth"- значит ответ "six"