What is liquid pressure? Formula/Guidance: Liquid pressure is defined as the force exerted by a liquid per unit area.

What is the SI unit for measuring liquid pressure? Formula/Guidance: Pressure is measured in Pascals, equivalent to one newton per square metre.

Which of the following factors directly affects liquid pressure? Formula/Guidance: Liquid pressure depends on depth, density, and gravity (P=ρghP = \rho ghP=ρgh).

How does the depth of a liquid affect the pressure it exerts? Formula/Guidance: Pressure increases linearly with depth according to P=ρghP = \rho ghP=ρgh.

What is the formula for calculating liquid pressure? Formula/Guidance: The formula for liquid pressure is P=ρghP = \rho ghP=ρgh, where ρ\rhoρ is density, ggg is gravity, and hhh is depth.

Two containers of different shapes are filled with the same liquid to the same depth. Which statement about the pressure at the bottom of each container is true? Formula/Guidance: Liquid pressure depends only on depth, density, and gravity.

Imagine a bottle with holes at different heights filled with water. From which hole will water spurt out with the greatest force? Formula/Guidance: The force of water spurt depends on the pressure, which increases with depth.

What is buoyant force? Formula/Guidance: Buoyant force is the upward force exerted by a liquid, calculated using Fb=ρVgF_b = \rho V gFb​=ρVg.

Which principle explains why buoyant force occurs? Formula/Guidance: Archimedes' Principle explains buoyant force as equal to the weight of displaced liquid.

What determines whether an object will sink or float in a liquid? Formula/Guidance: Objects float if their density is less than that of the liquid.

A submarine is submerged 100 metres below the surface of the ocean. The density of seawater is 1025 kg/m³. What is the pressure exerted by the seawater on the submarine at this depth? Formula/Guidance: Use P=ρghP = \rho ghP=ρgh, where ρ=1025 kg/m3,g=9.8 m/s2,h=100 m\rho = 1025 \, \text{kg/m}^3, g = 9.8 \, \text{m/s}^2, h = 100 \, \text{m}ρ=1025kg/m3,g=9.8m/s2,h=100m.

A hydraulic lift system uses a small piston with a cross-sectional area of 0.01 m². A force of 100 N is applied to this piston. What is the pressure exerted on the fluid in the system? Formula/Guidance: Use P=F/AP = F/AP=F/A, where F=100 N,A=0.01 m2F = 100 \, \text{N}, A = 0.01 \, \text{m}^2F=100N,A=0.01m2.

A dam is designed to hold back water to a depth of 50 metres. The density of water is 1000 kg/m³. What is the pressure exerted by the water on the dam at the base? Formula/Guidance: Use P=ρghP = \rho ghP=ρgh, where ρ=1000 kg/m3,g=9.8 m/s2,h=50 m\rho = 1000 \, \text{kg/m}^3, g = 9.8 \, \text{m/s}^2, h = 50 \, \text{m}ρ=1000kg/m3,g=9.8m/s2,h=50m.

A rock with a volume of 0.005 m³ is completely submerged in water. The density of water is 1000 kg/m³. What is the buoyant force acting on the rock? Formula/Guidance: Use Fb=ρVgF_b = \rho V gFb​=ρVg, where V=0.005 m3,g=9.8 m/s2V = 0.005 \, \text{m}^3, g = 9.8 \, \text{m/s}^2V=0.005m3,g=9.8m/s2.

A block of wood with a density of 600 kg/m³ and a volume of 0.01 m³ is placed in water (density 1000 kg/m³). Will the block float or sink? Formula/Guidance: Objects float if their density is less than the density of water.

A rectangular object with dimensions 0.2 m x 0.3 m x 0.4 m is submerged in a liquid with a density of 800 kg/m³. What is the buoyant force acting on the object? Formula/Guidance: Calculate volume V=0.2×0.3×0.4=0.024 m3V = 0.2 \times 0.3 \times 0.4 = 0.024 \, \text{m}^3V=0.2×0.3×0.4=0.024m3 and use Fb=ρVgF_b = \rho V gFb​=ρVg.

In a hydraulic system, a force of 50 N is applied to a piston with an area of 0.002 m². What force will be exerted by a larger piston with an area of 0.05 m²? Formula/Guidance: Use P=F1/A1=F2/A2P = F_1/A_1 = F_2/A_2P=F1​/A1​=F2​/A2​, solve for F2F_2F2​.

A swimmer dives to a depth of 10 metres in a freshwater lake. What is the total pressure acting on the swimmer at this depth? Formula/Guidance: Add atmospheric pressure to water pressure: P=Patm+ρghP = P_{\text{atm}} + \rho ghP=Patm​+ρgh.

A ship has a mass of 10,000 kg. How much water must it displace to float? Formula/Guidance: The ship must displace water equal to its weight, Volume=Weight/(ρg)\text{Volume} = \text{Weight}/(\rho g)Volume=Weight/(ρg).

A hole is punched in the side of a container filled with water. At what depth should the hole be placed so that the water spurts out the furthest horizontal distance? Formula/Guidance: By Torricelli's Law, maximum horizontal distance occurs at half the height of the water.