При нагревании воды в закрытой пробкой пробирке увеличивается количество пара, находящегося под пробкой, и повышается его давление на пробку. Наконец, давление пара выталкивает пробку, при этом пар совершает работу. Часть первоначальной энергии пара пошло на совершение работы по выталкиванию пробки. Внутренняя энергия пара превратилась в механическую энергию.
<span>Так как пар выходит еще достаточно горячий, то оставшуюся энергию он отдает окружающему воздуху, имеющему более низкую температуру.</span>
Sunday, look after, pets, feed, for a walk, bones, pets, fish, cat, corn
Synonyms: delicious, mouth-watering, tasty, tempting
This is a story about a friendship between two enemies... The story happened in a small valley near the highest waterfall in the world. It was a sunny and a warm day. The little monkey on the tree named Jack was enjoying the diverse scenery of the intact nature. He seemed to be very happy and pleased! However, the green crocodile named Pet was realy
jealous and did not like Jack. Pet is always treating Jack as a rubbish. Jakc tried to have a talk with a rude and spoiled crocodile. But unfortunately, Jack did not manage to change Pet`s attitude. One evening the monkey was very hungry and wanted to it. He noticed the yellow banana at the tree on another side of the river. He was so hungry, that he decided to cross the river in order to get the food. It was such a windy a cloudy weather, that Jack fel down into the river, which was full of hunters. "It is the end" - thought Jack. Suddenly, he felt something underwater pushing him to the nearest coast. Finaly, when Jack`s destinaton was reached he turned around and saw the crocodile Pet! Pet saved him! Now, they are bossom friends! They both have many in common, which makes them feel to be the one part of something realy essential)
1)over 5 hours
2) my mom coming from work
3) watched a lot of films
4) coming down the mountain
5) they work
