Question

Кружка с водой плавает в кастрюле с водой. Закипит ли вода в кружке, если кастрюлю поставить на огонь? Ответ поясните.

Answer 1

Нет., не закипит
количество теплоты будет расходоваться на нагревание   кружки из какого-то металла, во время парообразования воды в кастрюле температура меняться не будет 100С, в результате на парообразование воды в кружке энергии будет недостаточно

Answer 2

Can water boil in a cup floating in a pot of water?

Yes, water can boil in a cup floating in a pot of water if the pot is placed on a heat source. When heat is applied to the pot, the water in the pot will start to heat up. As the water temperature rises, it will transfer heat to the cup through conduction. Eventually, the water in the cup can reach its boiling point and start to boil.

The process of boiling occurs when the temperature of a liquid reaches its boiling point, which is the temperature at which the vapor pressure of the liquid equals the atmospheric pressure. At this point, bubbles of vapor form within the liquid and rise to the surface, creating the characteristic boiling motion.

It's important to note that the cup floating in the pot does not affect the boiling process itself. The cup simply acts as a container for the water and does not significantly impact the heat transfer or the boiling behavior of the water.

In summary, if a cup of water is floating in a pot of water and the pot is placed on a heat source, the water in the cup can boil as the temperature of the water in the pot increases.