Answer:
Best example would be Carnot engine. It is possible in theory not in real life.
Explanation:
In real engines, the heat transfers at a sudden change in temperature whereas in a Carnot engine, the temperature remains constant. In our day to day lives, reversible processes can't be carried out and there is no such engine with 100 % efficiency. Thus, the Carnot cycle is practically not possible.
Explanation:
According to Shishatsky, he feels regret for those who are nostalgic for "the good old Soviet days" when all the Soviet people were "brothers and sisters" and unanimously supported the Communist Party, which did everything possible day and night to achieve well-being of the entire Soviet nation. Most of these people are elderly, in their sixties and seventies. They are pensioners, veterans of World War II (who had many privileges in Soviet times), and many ordinary people who are alone and frustrated.
People believed in a better "bright future", but they didn't win anything.
Answer:
The four types of lines are <em>horizontal</em> <em>line</em>, <em>vertical </em><em>line</em>, <em>parallel</em> <em>line</em> <em>and</em> <em>perpendicular</em> <em>line</em>. They are defined by their orientation and the angles formed between them.
