Given that this stands out a mile as almost certainly a school homework question, to answer directly would be to make me complicit in cheating.
So I will tell you how to calculate it, which would appear to be the point of the question:
1) The relationship between depth and pressure of water is linear.
2) If water X ft deep exerts a pressure of P lb/in2, then water of Y ft deep will obviously exert a pressure of P(Y/X) lbs/in2
Given thats information you can now solve the original question.
12psi
12.01 psi
20 pounds per sq/in
The diameter of the water column does not affect the pressure.It is the height of the column that determines the pressure at the base.(and also the barometric pressure and temperature).
mass / area although technically it should be weight (or force) / area for example: imperial an object with a mass of 1.5 lb and an area of 2 square inches will exert a pressure of 0.75 pounds per square inch (psi) metric an object with a mass of 1.5 kg and an area of 0.5 square metres will exert a pressure of 3 kg/m2 (or 3 N/m2 or 3 Pa)
12psi
12.01 psi
20 pounds per sq/in
The same reason bricks exert downward pressure. Gravity.
Yes, water exerts pressure on the hull of the submarine.
The same reason bricks exert downward pressure. Gravity.
Fluids are constantly trying to spread out, and that exerts pressure on the container you put it in.
Sorry - it exerts more pressure than a flt heel.
Yes. Atmospheric pressure is the pressure caused by air when it exerts pressure on the surface of earth.
air pressure
It exerts pressure on the side with a higher concentration of water.
You need to know how high the water column is to calculate the pressure it exerts at its base! For example, a column of water 1 metre deep would exert a pressure of 9.81 kPa at its base (density x gravity x depth - 1000 * 9.81 * 1). This would be equal to approx 1.42 PSI.