Question

1. Почему ручки чайников и кастрюль делают из пластмассы или дерева?2. Почему нагретая сковорода охлаждается в воде быстрее чем в воздухе?3. Где и почему именно там размещают батареи в помещениях?

Answer 1

1.Пластмасса и дерево имеют низкую теплопроводность. Такие ручки предохраняют руки человека от ожогов.
2.Вода обладает большей теплопроводностью . ( то есть в воде молекулы находятся близко друг к другу и лучше контролируют тепло ) 
3.Батареи размещают где угодно , но ниже окон .Т.к. это способствует лучшему процессу конвекции . 

Answer 2

Why are handles of teapots and pots made of plastic or wood?

The handles of teapots and pots are often made of plastic or wood because these materials have low thermal conductivity, which means they do not conduct heat well. This makes them suitable for handling hot objects without transferring too much heat to the user's hand.

Why does a heated frying pan cool down faster in water than in air?

A heated frying pan cools down faster in water than in air due to the higher thermal conductivity of water compared to air. Water has a higher specific heat capacity and thermal conductivity, which allows it to absorb and transfer heat more effectively than air. When the hot frying pan is placed in water, the water quickly absorbs the heat from the pan, causing it to cool down faster.

Where and why are radiators placed in buildings?

Radiators are typically placed under windows in buildings because windows are the coldest surfaces in a room due to heat loss through conduction and air movement. Placing radiators under windows helps to counteract the cold air falling from the window and creates a convection current that circulates warm air around the room. This positioning also helps to prevent condensation on the windows by keeping them warmer