FMHE - Moodle 1

What factors affect the height of a liquid column in a capillary tube?

• Viscosity of the liquid

• 
  Temperature of the liquid

• Color of the liquid

• Diameter of the tube, surface tension, density of the liquid, and contact angle.

What is capillarity and how does it occur?

• Capillarity is the ability of a liquid to resist gravity completely.

• Capillarity is the ability of a liquid to flow in narrow spaces without the assistance of external forces, occurring due to the balance of cohesive and adhesive forces.

• Capillarity is the process of a liquid evaporating quickly in open air.

• Capillarity occurs only in large containers filled with water.

How does the metacentre relate to the stability of floating bodies?

• The metacentre is irrelevant to the stability of floating bodies.

• The metacentre must be below the center of gravity for stability.

• The metacentre only affects submerged bodies, not floating ones.

• The metacentre determines the stability of floating bodies; it must be above the center of gravity for stability.

What is the definition of viscosity in fluids?

• Viscosity is the density of a fluid in a solid state.

• Viscosity is the speed at which a fluid flows.

• Viscosity is the temperature at which a fluid boils.

• Viscosity is the measure of a fluid's resistance to flow.

Explain the concept of buoyancy in fluids.

• Buoyancy only applies to gases and not liquids.

• Buoyancy is the force that pulls objects down in a fluid.

• Buoyancy is the weight of the fluid displaced by an object.

• Buoyancy is the upward force in fluids that allows objects to float or sink based on their weight relative to the fluid displaced.

What is the definition of fluid kinematics?

• Fluid kinematics focuses on the forces acting on fluids during motion.

• Fluid kinematics is the analysis of fluid mixtures and their chemical properties.

• Fluid kinematics is the study of the motion of fluids without considering the forces that cause the motion.

• Fluid kinematics is the study of fluid properties under pressure.

What is the continuity equation in fluid dynamics?

• A1V1 = A2V2 + A3V3

• 
  A1 + A2 = V1 + V2

• A1V1 = A2 + V2

• The continuity equation is A1V1 = A2V2.

What is Bernoulli's principle and its applications?

• Bernoulli's principle is used exclusively in weather forecasting.

• Bernoulli's principle states that pressure increases with fluid speed.

• Bernoulli's principle is only applicable to gases.

• 
  Bernoulli's principle is used in various applications such as airplane wing design (lift generation), carburetors in engines, and predicting the behavior of fluid flow in pipes.

Stream lines are _________________

specific gravity of water and mercury