Pressure

Which of the following units is typically used to measure pressure?

• Celsius

• Newton

• Pascal

• Joule

What happens to the pressure exerted by a liquid if its density increases?

• The pressure increases

• The pressure decreases

• The pressure remains the same

• The pressure becomes zero

A force of 100 N is applied to an area of 5 m². What is the resulting pressure?

• 20 Pa

• 50 Pa

• 200 Pa

• 500 Pa

Consider two cubes, one with a smaller volume and the other with a larger volume, both having the same mass. Which cube will exert more pressure on the floor?

• The smaller cube

• The larger cube

• They will exert the same pressure.

• More information is needed to determine the answer.

What is the formula for calculating hydrostatic pressure at a given depth in a fluid?

• P = ρgh

• P = F/A

• P = γh

• P =fd

How does the hydrostatic pressure change with increasing depth in a fluid?

• It varies unpredictably.

• It remains constant.

• It decreases linearly.

• It increases linearly.

If the density of a liquid is 1000 kg/m³ and the depth is 10 meters, what is the hydrostatic pressure at that depth?

• 1 kPa

• 10 kPa

• 100 kPa

• 1000 kPa

A container holds two different fluids, one with a density of 800 kg/m³ and the other with a density of 1200 kg/m³. If the pressure at the bottom of the container is 200 kPa, which fluid is at the bottom?

• The fluid with a density of 800 kg/m³

• The fluid with a density of 1200 kg/m³

• Both fluids are at the same level.

• It cannot be determined without additional information.

A diver goes 20 meters deep in the ocean. If the density of seawater is 1025 kg/m³, what is the approximate pressure experienced by the diver if the air pressure above the ocean is 101 kPa?

• 196 kPa

• 205 kPa

• 306 kPa

• 3920 kPa

Two divers are exploring a freshwater lake. Diver A is at a depth of 20 meters, and Diver B is at a depth of 25 meters. What can be said about the pressure experienced by the two divers?

• Diver A experiences higher pressure than Diver B

• Diver B experiences higher pressure than Diver A

• The pressure is the same for both divers

• The pressure difference cannot be determined without more information