F5 2.1 Pressure In Liquid

Choose factors that affect the pressure in liquid.

• depth of liquid

• gravitational strength

• density of liquid

• volume of liquid

A diver is at 100 m depth in a sea. If density of the sea water is 1025 kg m^-3 , calculate the water pressure acting on the diver?

• 1005.5 kPa

• 1000.0 kPa

• 1025.0 kPa

• 1020.0 kPa

Choose factors that DO NOT affect the pressure in a liquid.

• base shape

• mass

• density

• cross sectional area of container

A diver is at 90 m depth in a sea. If density of the sea water is 1025 kg m^-3 , calculate the actual pressure acting on the diver?

[atmospheric pressure = 100kPa]

• 905 kPa

• 1005 kPa

• 1019 kPa

• 1025 kPa

Calculate density of the blue liquid

• 755 kg m^-3

• 1200 kg m^-3

• 691 kg m^-3

• 1120 kg m^-3

Belows are list of application of pressure in liquid EXCEPT

• position water tank at top of the house

• Use of the siphon

• rubber sucker

• construction of dam

pressure of 1 atm equivalent to:

• 760 mm Hg

• 10.3 m H₂O

• 100 mbar

• 100 kPa

Convert 45 cm Hg to unit Pascal

[density of mercury: 13 600 kg m³]

• 100 kPa

• 60 kPa

• 40 kPa

• 45 kPa

Calculate gas pressure in the tank if the fluid inside the manometer is water.

[Atmospheric pressure: 10.3 m H₂O]

• 11.5 m H₂O

• 9.1 m H₂O

• 1.2 m H₂O

• 10.5 m H₂O

Calculate gas pressure in the tank if the fluid inside the manometer is mercury.

[Atmospheric pressure: 76 cm Hg, density of mercury fluid: 13 600 kg m^-3]

• 112 kPa

• 109 kPa

• 93.4 kPa

• 96.1 kPa