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Is psi for water pressure?
It is mostly used when referring to air. I suppose it can be used but I would expect it to be inches cubed instead of per square inch when dealing with water.
A column of water 2.31 ft high exerts a pressure of 1 pound per square inch how much pressure does a column of water 47 ft high exert?
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.
If you have a 1000 gallon container of water that has a half inch pipe coming out the bottom of the container what is the psi at that pipe and does the height and circumference of the container matter?
Shape matters First, the shape of the vessel matters. The outward pressure applied to the inside of the walls of the vessel is not unifom, regardless of its shape, but it will be more uniform for cylindrical vessels and more uniform, still, for spherical ones. Second, be advised that the contributions below apply more to water columns than to vessels. The pressure is all dependant on the height of the column of water. Calculate the weight of a 1 ft by 1 ft column of water to the height of the column. It doesn't really matter if the column is ACTUALLY 1 ft by 1 ft, the physics works out that way. Simply said, if the height of the container is 10 ft, that would give you a 10 cubic ft column of water. Ten cubic ft of water would be about 74.8 gallons. A gallon weighs about 8 pounds, giving you a column of water that weighs about 598 pounds. That would make the pressure at the bottom of the tank 598 pounds per square foot. To convert that to inches, divide by the number of square inches in a square foot, which is 144, leaving you about 4.1 PSI, if the water column is 10 ft high. Pressure at the bottom of a water tank Since for practical purposes, water weights approximately 8.34 lb. per gallon, 1000 gallons of water would weight 8340 lb. The bottom of the container does matter, as the 8,340 lb. would be distributed evenly over the entire surface area of the bottom. The wider the tank, the lower the psi. Conversely, the narrower the tank, the higher the psi. The water will exert exactly the same pressure per square inch on a 1/2 inch pipe as on a 1 inch pipe or a 6 inch pipe. To calculate the pressure at the bottom of the tank, calculate the bottom surface as Pi times radius squared. Example: with a 3-ft diameter tank: 3.14159 X 2.25 = 7.06858 sq. ft. (Pi times the radius squared.) Therefore 8,340 lb. per 7.06858 sq ft = 8,340 lbs per 1017.87 sq in = 8.194 psi. Calculate pressure for other diameter tanks by simply substituting the diameter in the above example. The only factor that would effect the answer to your question would be the depth of the water. One foot of fresh water depth will exert .43 psi on a gauge. The size, shape and configuration of the container have no bearing on it. If you had a gauge at the bottom of a million gallon swimming pool that was 10 feet deep and you had a gauge at the bottom of a 4 inch pipe that was running vertical 10 feet deep (approximately 6.5 gallons) both gauges would read 4.3 psi.
How much pressure would be generated by raising water 1 degree?
The answer depends on the coefficient of thermal expansion of water, and the increase in pressure would be very small. In fact, between 0 and 4 deg C, water contracts and so the pressure will drop!
What does this mean in maths mm Hg?
The term mm Hg means millimeters of mercury; this is a measurement of barometric pressure (the pressure of air is measured in terms of the equivalent height of a column of mercury that would exert the same pressure). 1 mmHg is about 133 pascals.
Why is the value of atmospheric pressure compared to mercury?
Atmospheric pressure will support a column of mercury to about 760 mm. Mercurial air pressure is described as '760 mmHg'. As air pressure changes , the height of this column will also change. If you did it with water, the column would have to be about 34 feet (10.2 metres) in height.
How many inches of water are in a gallon of water?
this question can't be answered because you can only get a surface area calculation from 30X42 inches, (which is 1260 square inches) To calculate the volume, you need the depth of the water as well.
How many psi equals 1 water column?
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.
How many psi is 1 inch water column?
Well that depends, first off pressure is equal to specific gravity times height. P=SG*h. so the pressure due to the water column would be 0.0361 psi given that SG of water = 62.4 lb/ft^3. Then you have to take into consideration any other pressures acting on the water. If the top of the column is open to the air then the absolute pressure would be 14.7321 psi given that atmospheric pressure is 14.696. The basic formula to make this calculation in any situation is P=P0+SG*h where P0 is the pressure above the column.
How would one calculate the forces exerted by a given volume of water upon the faces of a rectangular box which it fills?
The pressure of the water varies as a function of depth. To calculate the pressure at a given depth take a column of water terminating in some area at the depth you want. For instance, take a 1 in^2 area that is 30 ft deep. The volume of water in this column is 360 cubic inches. Multiply this by the density of water to get the weight of the water in this column. That weight (the force due to gravity) divided by the area (taken to be 1 square inch) is equal to the pressure. Now that we can calculate the pressure as a function of depth, we can then find the pressure for a small horizontal band on the wall with an area equal to the a small increment of height times the width of the wall. This multiplied by the pressure gives the force on that small band. Sum up all the bands (or, really, integrate over the vertical axis) with the pressure calculated at each depth as outlined above.
How much steam pressure would a five inches diameter by twelve inches long with six inches of water in it?
The steam pressure (assuming this is a closed container) will be entirely dependent on the temperature. Look up steam tables to get the pressure of saturated steam at various temperatures.
What would water pressure be from a 5500 gallon cistern 100 feet high?
The water pressure depends ONLY on the height, and the density of the liquid - not on the number of gallons. You basically calculate the weight of a vertical column of that height, and divide by the base area. The column can be of any cross section - for example a square centimeter, a square meter, or a square foot. (For water, the pressure is about 1 bar for every 10 meters.)
What is the pressure at the bottom of the ocean?
The pressure at the bottom of the ocean can be determined by the formula P = dgh, where d = 1025 kg per cubic meter, g is the acceleration due to gravity and h is the depth of the water in meters. At the bottom of the Marianas Trench (11034 meters), the pressure would be 1.11 E5 kPa, or 1095 times normal air pressure at sea level.
Why is it mercury rather than water used in barometer and in blood pressure measurements?
A water barometer would have to be many feet tall because the density of water is much lower than that of mercury. In addition, the vacuum above the column would be spoiled by the water vapor pressure, far higher than that of mercury, and strongly temperature dependent.
What would the pressure be in a liquid contained in a vertical tube sealed at the top with a submerged open bottom be?
It would be the same as the pressure in the liquid outside the tube at the open end- the deeper it is in the liquid, the higher the pressure.
Why water cannot be used in simple barometer?
Following are the reasons why mercury and not water is used in a barometer:1. Mercury is relatively denser than water, consequently the length of the column of water would have to be about 34 feethigh to exert pressure equal to that of the atmosphere while the column of mercury need to be only 30 inches to exert pressure equal to that of the atmosphere.2. Mercury has a very low vapor pressure when compared to that of water. So it is more sensitive than water to the changes in the atmospheric pressure and rises more quickly to record the changes in the atmospheric pressure.3. Mercury's freezing point is much lower than that of water's so it can record the atmospheric pressure at temperatures below that of 0 degrees centigrade.4. Mercury does not evaporate easily so very little mercury vapor enters the vacuum above the mercury in the tube.5. Mercury being a metal shines brightly and so can be used to read the markings on the tube easily.
Is psi for water pressure?
It is mostly used when referring to air. I suppose it can be used but I would expect it to be inches cubed instead of per square inch when dealing with water.
