Use the graph of absolute pressure versus depth for an unknown liquid. Take g = 9.8 m/s². What is the liquid's density?

The graph shows gauge pressure versus depth in a liquid. With g = 9.8 m/s², what density does the slope imply?

The graph shows absolute pressure versus depth for water with density 1000 kg/m³. What surface pressure does the graph give at 0 m depth?

A pressure-depth graph for an unknown liquid is shown. Take g = 9.8 m/s². What is the liquid's density?

The graph gives gauge pressure at several depths in one liquid. Take g = 9.8 m/s². What density best matches the data?

The graph shows absolute pressure versus depth in a tank. What absolute pressure is present at the liquid surface?

The diagram shows an open fresh-water tank with point X 3.0 m below the surface. Take ρ = 1000 kg/m³, g = 9.8 m/s², and $P_0=1.01\times 10^5\text{Pa}$. What is the gauge pressure at X?

Point A is marked 8.0 m below the surface in an open seawater tank. Use ρ = 1030 kg/m³, g = 9.8 m/s², and $P_0=1.01\times 10^5\text{Pa}$. What is the absolute pressure at A?

In the oil tank diagram, point B is 2.4 m below the surface. The oil has density 850 kg/m³. Take g = 9.8 m/s². What is the gauge pressure at B?

A mercury tank is open to the atmosphere, and point C is 0.60 m below the surface. Use ρ = 13,600 kg/m³, g = 9.8 m/s², and $P_0=1.01\times 10^5\text{Pa}$. What is the absolute pressure at C?

The cross-section shows point D 1.5 m below the surface in an open fresh-water tank. Use ρ = 1000 kg/m³, g = 9.8 m/s², and $P_0=1.01\times 10^5\text{Pa}$. What is the absolute pressure at D?

A brine tank has density 1200 kg/m³, and point E is marked 5.0 m below the surface. Take g = 9.8 m/s². What is the gauge pressure at E?

A crate presses on a floor with a force of 750 N spread evenly over 0.015 m². What pressure does the crate exert on the floor?

A hydraulic pad must exert a pressure of $2.4\times 10^5$ Pa over an area of 0.020 m². What force must it apply?

A 900 N machine foot must keep its pressure on the floor to $3.0\times 10^4$ Pa. What contact area is needed?

A student's shoe presses on the ground with 540 N over a sole area of $2.5\times 10^{-3}$ m². What average pressure does the shoe exert?

A small piston has area $3.0\times 10^{-4}$ m² and is under fluid pressure $1.8\times 10^6$ Pa. What force acts on the piston?

A flat support may press with 120 N while producing no more than $4.0\times 10^5$ Pa. What minimum contact area is required?

A diver is 12.0 m below the surface of fresh water. Use ρ = 1000 kg/m³, g = 9.8 m/s², and $P_0=1.01\times 10^5\text{Pa}$. What is the absolute pressure on the diver?

A lake sensor is 4.5 m below the surface of fresh water. Use ρ = 1000 kg/m³ and g = 9.8 m/s². What gauge pressure does the water exert there?

A submarine hatch is 15.0 m below the ocean surface. Use seawater density 1030 kg/m³, g = 9.8 m/s², and $P_0=1.01\times 10^5\text{Pa}$. What is the absolute pressure at the hatch?

An oil storage tank contains oil of density 900 kg/m³. At a point 6.0 m below the surface, with g = 9.8 m/s², what is the gauge pressure?

A point in mercury is 0.20 m below the surface. Use ρ = 13,600 kg/m³, g = 9.8 m/s², and $P_0=1.01\times 10^5\text{Pa}$. What is the absolute pressure there?

A fish is 2.0 m below the surface of fresh water. Use ρ = 1000 kg/m³, g = 9.8 m/s², and $P_0=1.01\times 10^5\text{Pa}$. What absolute pressure acts on the fish?

At the bottom of a 1.2 m deep swimming pool, the water density is 1000 kg/m³. With g = 9.8 m/s², what is the gauge pressure due to the water?

Water in a tower is 30.0 m above a pipe outlet. Use ρ = 1000 kg/m³ and g = 9.8 m/s². What gauge pressure is available at the outlet from the water column?

Two open containers are filled with fresh water to the same depth. One is narrow and one is wide. How do the gauge pressures at their bottoms compare?

A tiny square pressure sensor is held underwater at one point and then rotated without moving its center. What should happen to the pressure reading?

A narrow tube and a wide flask are connected at the bottom and partly filled with water. When the water stops moving, how do the water levels in the two sides compare?

Three open tanks have the same fluid depth but contain liquids with densities 700 kg/m³, 1000 kg/m³, and 1260 kg/m³. Which bottom gauge pressure is greatest?