แรงดันของเหลว

When a fluid fills a closed container, it exerts pressure

• only on the bottom of the container

• only on the sides of the container

• only on particles within the fluid

• everywhere inside the container

Fluids exert pressure because they

• contain force particles

• are confined to small area

• have constantly moving particles

• all of these are correct

A submarine is found 20 meters below the surface of the sea. The density of sea water is 1020 kg m^-3 and g = 10 m/s² What is the pressure due to the sea water acting on the submarine?

• 20.4 Pa

• 2.04 x 10³ Pa

• 2.04 x 10² Pa

• 2.04 x 10⁵ Pa

• 2.04 x 10^-2 Pa

The pressure due to water at the base of a pond is measured as 50 kPa. What is the depth of the pond?

[density of water is 1,000 kg m^-3]

• 10 meter

• 12 meter

• 8 meter

• 5 meter

Where is pressure the greatest on the dam?

• D
• C
• B
• A

Tags

NGSS.MS-ETS1-1

The greatest ocean depths on the Earth are found in the Marianas Trench near the Philippines. Given its depth is 11.0 km and the density of seawater is 1200 kg/m³, How do you calculate the pressure due to the ocean at the bottom of this trench.

• 1200x10x11

• 1200x11

• 1200x11000x10

• 1200x10

Which of the following factors affect the pressure at the bottom of a container of liquid?

• depth of the container

• width of the container

• temperature of liquid

• color of liquid

At what depth is the pressure due to water on a diver equal to the atmospheric pressure

[Atmospheric pressure at sea level = 100 kPa;

density of water = 1,000 kg m^-3]

• 1 m

• 10 m

• 20 m

• 100 m

Which of the following graphs shows the correct relationship between water pressure, p and depth, h of the water?

• A
• B
• C
• D

Two identical containers containing liquid M and liquid N with 28 cm height and 20 cm height respectively. Both containers produce the same water spurt.
If the density of liquid M is 2.0 g cm⁻³, find the density of liquid N.

• 0.70 g cm⁻³
• 1.40 g cm⁻³
• 1.43 g cm⁻³
• 2.80 g cm⁻³