because if not then you have friction and friction causes massive problems
There is nothing that is specifically designed to keep the air pressure low under a train. A train is kept on the tracks by gravity, nothing more.
because if not then you have friction and friction causes massive problems
Pressure underneath a moving train is lower because of the Bernoulli's principle, which states that as fluid (such as air) moves faster, its pressure decreases. The train's movement creates airflow beneath it, causing the pressure to drop.
A low pressure under a train helps to minimize the drag force caused by air resistance, allowing the train to move more efficiently. It also reduces the risk of creating a partial vacuum underneath the train, which could impact its stability.
no, it is under extreme pressure
A solution under high pressure will have more gas dissolved in it than one under low pressure.
A solution under a high pressure
the solution with higher pressure would have more gas in it that the one with low pressure.
It means you have low oil pressure. Low oil pressure means you will destroy the engine if you keep running it with low pressure.
It is under lower pressure, however, it is under pressure enough to compress it into a liquid.
A solution under a high pressure
There are more particles of gas.