SOLID AND FLUID

Density is

• mass per unit volume

• force per unit area

• ratio of density of substance to the density of water

• mass per unit area

Relative density is

• force per unit area

• mass per unit volume

• the ratio of density of substance to the density of water

• mass per unit acceleration

Define Pascal's Principle.

• A body fully or partially immersed in a fluid is buoyed up by a force which is equal to the weight of displaced fluid.

• The pressure exerted on enclosed fluid, transmits uniformly to every portion of the fluid.

• Comparison of the useful work energy provided by a machine to the work energy applied to the machine.

• Mass per unit volume.

Pressure is defined as

• mass per unit area

• mass per unit acceleration

• the ratio of density of substance to density of water

• force per unit area

Mass of 150 cm³ of stone is 400 g. Its density is

• 3200 kgm^-3

• 2666.67kgm^-3

• 4303.00 kgm^-3

• 3540kgm^-3

A block of wood measuring 3.8 m long, 2.5 m wide and 0.5 m thick is placed on a table. Find the pressure exerted on the table due to the block if the mass of the block is 3800 kg.

• 3040Pa

• 29822.4Pa

• 400Pa

• 3924Pa

A cube with a density of 3150 kg/m³ is located on a table. The weight of the cube is 574N. Determine the volume of the cube.

• 184306.5m³

• 204306.5m³

• 1843.5m³

• 20430.5m³

The upward force exerted by a fluid on a submerged object.

• gravity
• anti-gravity
• buoyant force
• lift

A system that multiplies force by transmitting pressure from a small surface area through a confined fluid to a larger surface area.

• hydraulic system
• archimedes system
• pressure system
• bernoulli effect

What is the equation for pressure?

• Pressure = Force / Surface area
• Pressure = Force x Surface area
• Pressure = Force + Surface area
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