at sea level
at sea level
The pressure is greatest at the bottom of the bottle, where the weight of the water above creates the most force. The pressure is least at the top of the bottle, where there is less water above applying force.
The pressure is greatest at the bottom of the bottle, as it is supporting the weight of the water above it. The pressure is least at the top of the bottle, where there is less water above exerting force.
Yes, at least at 1 ATM pressure.
The least amount of pressure can be found in a vacuum, which is a space devoid of matter. In such environments, like outer space, there are very few particles to exert pressure. Additionally, within a body of water, pressure decreases with depth, so the surface of a large body of water would also have lower pressure compared to deeper levels.
Gravity. Water will always take the path of least resistance, which is sideways. And if there is pressure from the top, Pascal's principle is in affect which states that when pressure is applied to the top of a body of water the resulting affect is pressure on all other sides of the body of water.
This does vary slightly according to the shower, but for a shower without a pump, using a gravity feed, a water pressure of at least 0.1 bar is recommended. If your water pressure is low you will need to install a pumped shower.
It needs at least 38 psi of incoming water.
A rain barrel should be placed at least 2-3 feet off the ground to optimize water flow and pressure.
You need some sort of an instrument. Most of us just use a pressure gauge, although you could do it empirically--you could throw the end of the hose in water, and if bubbles came out you would know the gas pressure is at least as high as the water pressure--which is 15psi since the 15psi atmosphere is pressing down on the water.
You haven't provided enough information, we need to know, at least, the pressure of said pressure cooker, and even then I'm not sure quite if it's possible. If you look up the phase diagram for water, you can see that the melting point goes down with more pressure.
You need at least 50 psi, and if there is a restrictor, remove it.