fluids

Factors that affect pressure in a liquid are:

Depth and Density

Depth- Increased depth in the liquid-Increased pressure

Depth- Reduced depth in the liquid-Reduced pressure

Density-Higher liquid density-Higher pressure Density-Lower liquid density- Lower pressure

Factors that affect pressure in a gas are:

Temperature, volume and the number of particles

Pascal’s principal

states that an increase in the pressure of an enclosed fluid is transmitted uniformly in all directions.

Archimedes principle

states that an object immersed in a fluid is subjected to a buoyant force equal to the weight of the fluid displaced by the object.

Bernoulli’s principle

states that the higher the speed of a fluid, the lower its pressure, and vice versa.

What happens to the object if the buoyant force is weaker than the force of gravity.

The object would sink.

Explain Bernoulli’s principle in plane.

Due to the shape of a wing, air particles that pass over it, where the surface is curved, are forced to move more rapidly than those that pass below the wing, where the surface is flat. The pressure is thus greater below the wing than above, and the wing is subjected to an upward force called lift.

Explain Pascals principle in brakes

When a driver steps on the brake pedal, the pressure from his or her foot is transmitted through the brake fluid to the pads, which, in turn, act on the disks. Force is thus transmitted across a distance.

How can the volume of a solid can be calculated?

It can be calculated by measuring the volume of water the solid displaced when it was put in the liquid.

What is a buoyancy force and how does it work?

Buoyancy is an upward force in water that is created by the pressure in a liquid, and it increases with depth.

True of false-

The quantity of the buoyant force is not equal to the weight of the fluid displaced by the immersed object.

false