- #1
- 22,183
- 3,321
What will happen? And why?
Borg said:That looks an awful lot like a drawing for one of those perpetual motion thingys.
If you insist.micromass said:It does, but what would actually happen?
256bits said:What are we doing to the bottles?
If we squirt water down the yellow hose, water will come back up into bottle "a".
The blue tube connecting the air in bottle C to the air in bottle B makes it so that things will not reach the same level in bottle A. The blue tube could be 10 ft. long and the air pressure at the top of it (bottle B)would be essentially the same as the pressure at the bottom (bottle C). This makes an extension of the system. I believe the 11" length of tube d was chosen to be less than 15" so that water in bottle B would necessarily go through it and spill over from it even if the length of the blue tube was several feet long. (Another bottle could be put in the system (call it bottle D) (similar to bottle B) that the blue tube feeds into at a height several feet above this system. The water would go up an 11" tube from this bottle (because of the 15" length of tube "f") and spill right over. Clearly the water would not be at the same level as Bottle A.)Ibix said:This may be naive, but (assuming A is open at the top) isn't it essentially a manometer with a couple of air bubbles? So the answer is that the water level in the yellow tube must reach the same height as the water in bottle A. The details would surely depend on the initial pressure of the air in B and C.
The riddle is about a glass of water that has ice cubes floating in it and is left on a windowsill in a warm room. The question is what will happen to the ice cubes and why.
The ice cubes will eventually melt. This is because the temperature of the room is warmer than the freezing point of water, so the ice cubes will absorb heat and turn into liquid.
The ice cubes melt because of the process of heat transfer. The warmer air in the room transfers heat to the ice cubes, causing them to gain energy and melt into liquid water.
The water level will increase slightly as the ice cubes melt. This is because the volume of the ice cubes is greater than the volume of the water they will turn into.
The time it takes for the ice cubes to melt will depend on various factors such as the temperature of the room, size of the ice cubes, and the material of the glass. Generally, it could take anywhere from 30 minutes to a few hours for the ice cubes to melt completely.