Water depth pressure against air pressure

In summary, the conversation discusses the scenario of a container filled with water and another smaller container inside with air pressure. The question is whether the siphon from the larger container into the smaller one would still work despite the pressure of the air. It is determined that if the air pressure is higher than the water pressure in the siphon, no water will enter. If the air pressure is lower, water will enter until the pressures equalize.
  • #1
pragmaticindulgence
10
0
In a ten foot by 6 inch tall container filled with water were to have another container secured in it midway but had the pressure of air in it, (the bottom is open), if the smaller container has a siphon into it could you siphon in more water, or would the pressure that keeps the water from going up into it also keep the flow of water from the siphon from entering?
Also no air can get into the siphon, but will have the force of more water and air pressure on it, so it won't let in the air from the smaller container.
 
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  • #2
If the air pressure in that container is greater than the water pressure in the siphon, no water will get in. If it is lower, it will until the pressures equalize.
 
  • #3


The pressure exerted by the water in the larger container will be greater than the air pressure in the smaller container. This is due to the weight of the water above, which creates a hydrostatic pressure. The pressure difference between the two containers will determine the flow of water through the siphon.

If the pressure difference is significant, the water in the larger container will flow through the siphon into the smaller container, filling it up. However, if the pressure difference is small, the water may not flow through the siphon at all.

Factors that can affect the pressure difference include the depth of the water in the larger container, the height of the siphon, and the size and shape of the siphon tube. In order to siphon more water into the smaller container, you would need to increase the pressure difference by either increasing the depth of water in the larger container or using a longer or wider siphon tube.

It is also important to ensure that no air enters the siphon, as this could disrupt the flow of water. The pressure of the water and air in the larger container will not prevent the flow of water through the siphon, as long as the pressure difference is sufficient. However, if air enters the siphon, it could create air pockets that disrupt the flow.

In conclusion, the pressure difference between the two containers will determine the flow of water through the siphon. With the right conditions, it is possible to siphon more water into the smaller container despite the pressure of the water in the larger container. However, it is important to ensure that no air enters the siphon to maintain a steady flow.
 

1. What is the relationship between water depth pressure and air pressure?

The deeper you go underwater, the greater the water depth pressure and the lower the air pressure becomes. This is because the weight of the water above exerts pressure on the water at lower depths, while the weight of the air above decreases as you go deeper.

2. How does water depth pressure affect objects and organisms underwater?

Objects and organisms underwater experience increasing pressure as they descend to greater depths due to the increasing weight of the water above. This can cause structural damage or physiological changes in organisms not adapted to these pressures.

3. What is the unit of measurement for water depth pressure?

The unit of measurement for water depth pressure is typically expressed in pounds per square inch (psi) or atmospheres (atm). Other common units include pascals (Pa) and bars (bar).

4. How does air pressure affect diving and underwater activities?

Air pressure plays a crucial role in diving and other underwater activities, as it determines how much air is needed in a diver's tank and how long they can stay underwater. The lower air pressure at greater depths also affects the buoyancy of objects and the functioning of equipment.

5. How is water depth pressure measured and calculated?

Water depth pressure can be measured using a variety of instruments, such as a pressure gauge or a pressure sensor. It can also be calculated using the equation P = ρgh, where P is pressure, ρ is the density of water, g is the acceleration due to gravity, and h is the depth of the water.

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