Вопрос школьника по предмету Физика
идеальный газ отдал количество теплоты 200 дж и при этом совершил работу 200дж. внутренняя энергия газа при этом?
Ответ учителя по предмету Физика
идеальный газ отдал количество теплоты 300 дж и при этом внутренняя энергия уменьшилась на 100 Дж Работа совершённая над газом?
первый закон термодинамики
Q=A+dU
300 Дж = А + 100 Дж
А = 300-100 = 200 Дж
ответ 200 Дж
Похожие вопросы от пользователей
Karen spent nearly seven months painting the Mocha Lisa. She uses fresh- baked coffee to mix with water as the paint, painting different shades of shadow. Mocha Lisa is not the first time that Karen painted with coffee, she has also produced a number of «coffee version» world famous paintings, including the engagement portrait of Prince William and Kate; as her coffee art has been sold at 15,000 dollars, she is confident in the future market. Karen Eland said she has been a coffee lover, her using coffee as a pigment in painting was inspired by an experience in 1998. At that time she was creating watercolour in a coffee shop cup in Tulsa, Oklahoma City. Different shades of the colour of coffee excited her, and so coffee art was born.
2) How long did it take Karen to paint the Mocha Lisa?
3) What kind of coffee did she use?
4) Why is Karen confident in the «future market»?
5) When was Karen’s coffee art born?