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Консультация № 182000
24.01.2011, 22:07
0.00 руб.
25.01.2011, 12:16
0
1
1
Здравствуйте! Прошу помощи в следующем вопросе:
17. В воду массой m1, взятую при температуре t1, бросили кусок льда массой m2, имеющий температуру t2. Если через воду пропустить 100-градусный водяной пар массой m3, то температура смеси станет равной t.
m1=1 кг
t1=15 C
m2=0,05 кг
m3=10 г
t=16,5 C
t2-?
17. В воду массой m1, взятую при температуре t1, бросили кусок льда массой m2, имеющий температуру t2. Если через воду пропустить 100-градусный водяной пар массой m3, то температура смеси станет равной t.
m1=1 кг
t1=15 C
m2=0,05 кг
m3=10 г
t=16,5 C
t2-?
Обсуждение
25.01.2011, 17:18
общий
это ответ
Здравствуйте, xenitron!
Предлагаю Вам следующее решение задачи.
Как видите, однозначной уверенности в правильности решения у меня нет, потому что получено положительное по шкале Цельсия значение температуры льда. Это может, в частности, означать, что на самом деле не весь лёд растаял. Однако, тогда при имеющихся данных задача нерешаема. Возможна ошибка в рассуждениях по ходу решения, которой я не нашёл. Но весьма велика вероятность того, что при решении использованы значения констант, отличающиеся от тех, которые использованы составителями задачи...
Поэтому решение задачи выкладываю. На него потрачено со всеми проверками и раздумьями почти четыре часа.
С уважением.
Предлагаю Вам следующее решение задачи.
Как видите, однозначной уверенности в правильности решения у меня нет, потому что получено положительное по шкале Цельсия значение температуры льда. Это может, в частности, означать, что на самом деле не весь лёд растаял. Однако, тогда при имеющихся данных задача нерешаема. Возможна ошибка в рассуждениях по ходу решения, которой я не нашёл. Но весьма велика вероятность того, что при решении использованы значения констант, отличающиеся от тех, которые использованы составителями задачи...
Поэтому решение задачи выкладываю. На него потрачено со всеми проверками и раздумьями почти четыре часа.
С уважением.
5
Огромное Вам спасибо за проделанную работу.
Об авторе:
Facta loquuntur.
Facta loquuntur.
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