None.
A square inch or air is a measure of area. It has no height at all and so, the volume is zero. A volume of zero cannot contain any particles.
On earth it is responsible for air pressure. There are about 15 pounds of air above every square inch of the earth's surface. Or in other words, the volume of a column of air on Earth about a hundred miles high and a square inch in area weighs 15 pounds.
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.
Air return duct and filter grille size is dictated by the size of the unit (CFM) not the size of the house.
1500 sq ft.
example of fluid friction are air resistance or drag because an object moving through air actually collides with miniature particles, specially dust particles .
pounds per square inch
Pounds per Square Inch
The pressure of the air on one square-inch of your head is the weight of air from that square-inch all the way up to the top of the atmosphere. As you go up in elevation, some of the atmosphere is below you, and there is less of it above you. So the weight on each square inch, and thus the air pressure, becomes less.
Rounded up to 15
15 lbs
Air in a tire is not measured in gallons, but in PSI, or pounds per square inch, and different tires are made to have different amounts of air.
14.7 pound per square inch
14.7 pounds per square inch of head surface.
the answer is one atmosphere
Atmosphere pressure can be measured in pounds per square inch, and this varies depending on how far a location is above or below sea level. At sea level, atmospheric pressure equals 14.7 pounds per square inch (or psi).
On earth it is responsible for air pressure. There are about 15 pounds of air above every square inch of the earth's surface. Or in other words, the volume of a column of air on Earth about a hundred miles high and a square inch in area weighs 15 pounds.
Is it psi - pounds per square inch?