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Assume the water flows from the faucet sufficiently slow.
Borek said:Depends on how you define "full". I am assuming it means "overflowing". Then, it is still a function of how fast water is added from the tap. Or, more precisely, it depends on whether the water is added faster than it can flow through the tubes connecting tanks.
If it is added slow enough, 3 and 4 with overflow at almost the same time. If it is added pretty fast, it will overflow the first tank first.
I disagree. The only way there would be positive pressure from 3 into 4 (once they're at the same height) is if 3 is slightly more full. The water still has to get to 4 by going from high water level to low water level - even if it's one drop at a time. It ain't going to flow uphill.Ygggdrasil said:Four. Water pressure from tank #3 will make the level of tank 4 slightly higher than the level of tank 3.
Consider the force balance for water in the tube connecting tanks 3 and 4. If tanks 3 and 4 have the same height of water (above the inlet to tank 4), how much water is pushing on the outlet from tank 3? Is this more or less than the amount of water pushing on the inlet to tank 4?DaveC426913 said:I disagree. The only way there would be positive pressure from 3 into 4 (once they're at the same height) is if 3 is slightly more full. The water still has to get to 4 by going from high water level to low water level - even if it's one drop at a time. It ain't going to flow uphill.
And remember, it states the water is filling sufficiently slow.
Ygggdrasil said:Is this more or less than the amount of water pushing on the inlet to tank 4?
It's the same. Otherwise there would be flow.Ygggdrasil said:Is this more or less than the amount of water pushing on the inlet to tank 4?
DaveC426913 said:It's the same. Otherwise there would be flow.
There can never be more water in 4 than in 3.
At some point, when 3 and 4 are equal, a subsequent drop will enter 3, making it one drop higher. Only then will water flow from 3 to 4.
See rebellis post, above.
Ygggdrasil said:Consider the force balance for water in the tube connecting tanks 3 and 4. If tanks 3 and 4 have the same height of water (above the inlet to tank 4), how much water is pushing on the outlet from tank 3? Is this more or less than the amount of water pushing on the inlet to tank 4?
you were right the other time.¨Borek said:ROFL, completely missed the description below the image.
For engineering, there really is "insufficient" description. We also could add viscosity together with L/d of the tubes connections,, capillary and surface tension if the tubes are small and/or long. A real world engineering challenge.Student100 said:Hard water forms a mineral deposit in the outlet from 1 to 2, thus, one is the answer.
Yes, water can flow slowly enough to evaporate before filling up. This is known as slow evaporation or slow evapotranspiration.
The rate of water evaporation can be affected by factors such as temperature, humidity, air movement, surface area, and presence of other substances in the water.
The larger the surface area of water, the faster it can evaporate. This is because more water molecules are exposed to the air, allowing for a higher rate of evaporation.
Warmer temperatures increase the kinetic energy of water molecules, causing them to move more quickly and escape into the air as water vapor.
Yes, water can still evaporate without air movement. However, air movement can speed up the process by carrying away the water vapor and replacing it with drier air, creating a lower humidity which allows for faster evaporation.