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Viscosity is a measure of the resistance of a fluid which is being deformed by either shear stress or tensile stress. In everyday terms (and for fluids only), viscosity is "thickness" or "internal friction". Thus, water is "thin", having a lower viscosity, while honey is "thick", having a higher viscosity. Put simply, the less viscous the fluid is, the greater its ease of movement (fluidity).

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What are the main differences between viscosity and friction?

Viscosity is a measure of a fluid's resistance to flow, while friction is the resistance encountered when two surfaces move against each other. Viscosity depends on the internal friction within a fluid, while friction is a force that opposes motion between surfaces. Viscosity is specific to fluids, while friction can occur in both solids and fluids.


What is the relationship between viscosity and speed flow?

Viscosity is a measure of a fluid's resistance to flow. Higher viscosity fluids flow more slowly than lower viscosity fluids at the same pressure and temperature due to the internal friction between the fluid molecules. This means that fluids with high viscosity will have a slower speed flow compared to fluids with low viscosity under the same conditions.


What is the relationship between lubricity and viscosity in terms of their impact on the performance of a lubricant?

The relationship between lubricity and viscosity in a lubricant is that lubricity refers to the ability of the lubricant to reduce friction between moving parts, while viscosity refers to the thickness or flowability of the lubricant. A lubricant with high lubricity and appropriate viscosity can improve the performance of machinery by reducing friction and wear on parts, leading to smoother operation and potentially longer lifespan of the equipment.


What is the cause of viscosity in liquids and gases?

Viscosity in liquids and gases is caused by the internal friction between molecules as they flow past each other. This friction arises from interactions such as intermolecular forces and collisions between molecules. The more resistance there is to this flow, the higher the viscosity of the substance.


The friction between moving molecules in a liquid is called?

The friction between moving molecules in a liquid is called viscosity. Viscosity is a measure of a fluid's resistance to flow, with higher viscosity fluids being more resistant to flow than lower viscosity fluids.


Do fluids exert friction?

Yes, fluids exert friction through a property called viscosity. Viscosity is a measure of a fluid's resistance to deformation or flow, causing adjacent layers of fluid to move at different velocities, creating friction between them. This frictional force is responsible for fluid flow resistance in systems such as pipes or air moving over surfaces.


Scientific definition of viscosity?

Viscosity is a measure of a fluid's resistance to flow. It is the internal friction within a fluid that arises due to the interaction between its molecules. The higher the viscosity, the thicker the fluid and the more resistance it offers to flowing.


When compared to high viscosity liquid a liquid with a low viscosity does what?

A liquid with low viscosity flows more easily and rapidly compared to a high viscosity liquid. This is because low viscosity liquids have weaker internal friction between their particles, allowing them to move more freely.


What makes a fluid more viscous than others?

The ability of a liquid to resist flow because of its internal property is viscosity. Viscous liquid refers to liquids that are supercooled, highly viscous, and able to form a glass all at the same time.


What is meant by internal friction of molecular layer?

Internal friction of a molecular layer refers to the resistance encountered when molecules within that layer move or slide past each other. It can be due to interactions between molecules, such as van der Waals forces or hydrogen bonding, which impede their motion. This internal friction can affect properties like viscosity and flow behavior of the molecular layer.


What is the relationship between temperature and the viscosity of water as shown in the viscosity of water table?

The relationship between temperature and the viscosity of water is that as temperature increases, the viscosity of water decreases. This means that water becomes less thick and flows more easily at higher temperatures. This relationship is shown in the viscosity of water table, where the viscosity values decrease as the temperature increases.


Where did viscosity come from?

Viscosity arises from the internal friction between molecules in a fluid as they move past each other. It is a measure of a fluid's resistance to flow. The level of viscosity depends on the type of fluid and its temperature.