Why does the human body react so dramatically when put in a vacuum, a difference of 1 atm from atmospheric pressure, but people can dive hundreds of feet under water with the pressure increasing at a rate of 1 atm every 33ft or so.
I know that when you dive you are supposed to pinch your nose and pop your ears, but this doesn't work well for me. Are there any other ways to keep my ears from hurting like mad. Would ear plugs help?
We all know that when you put a sealed container with a good amount of liquid in the freezer is likely to "explode". For the sake of argument lets talk about a full 2 liter of Cola. Would it make the container less likely to explode if you squeezed out the air in the container before placing it in the freezer? My thoughts are that if you did so, the container tries to return to its natural shape and that lowers the pressure in the container so it might help. Also since the container contains the same max volume in either scenario, and there is no air to take up space the liquid can expand further unimpeded. However, the other thought is that the air provides a "cushion" because it is compressable where as the liquid is not.