Fluids Test

Front

What is buoyant force?

Back

The upward force exerted by a fluid on an object submerged in it, equal to the weight of the fluid displaced by the object.

Front

How does buoyant force change as an object sinks deeper into a fluid of constant density?

Back

The buoyant force first increases and then remains constant as the object sinks deeper.

Front

What is the formula for calculating buoyant force?

Back

Buoyant Force = Weight of the fluid displaced = Volume of the object submerged × Density of the fluid × g (acceleration due to gravity).

Front

What is the relationship between density and buoyant force?

Back

An object will float if its density is less than the fluid's density; the buoyant force equals the weight of the fluid displaced.

Front

What happens to the pressure exerted by a fluid as depth increases?

Back

The pressure increases with depth due to the weight of the fluid above.

Front

How do you calculate the pressure exerted by a fluid at a certain depth?

Back

Pressure = Atmospheric Pressure + (Density of fluid × g × Depth).

Front

What is the principle of Archimedes?

Back

A body immersed in a fluid experiences a buoyant force equal to the weight of the fluid it displaces.

Front

What is the difference between absolute pressure and gauge pressure?

Back

Absolute pressure is the total pressure measured from a vacuum, while gauge pressure is the pressure relative to atmospheric pressure.

Front

How does the density of salt water compare to fresh water?

Back

Salt water has a greater density than fresh water due to the dissolved salts.

Front

What is the effect of fluid velocity on pressure according to Bernoulli's principle?

Back

As the velocity of a fluid increases, the pressure within the fluid decreases.