Adhesive force is the force between two surfaces that are in contact with each other. It is caused by the attraction of molecules between the two surfaces. Adhesive force is usually stronger than cohesive force, which is the force between molecules of the same material. Adhesive force is responsible for the stickiness of objects such …
Cohesive force is the interaction between molecules that causes them to stick together. The most common example of cohesive force is the surface tension of water, which is caused by attractions between adjacent molecules of water. Cohesive forces also exist between molecules of different substances, such as between water and oil.
A paper clip remains afloat on a liquid surface because it has a low density. This means that the weight of the paper clip is less than the weight of the same volume of liquid, allowing it to remain suspended on the surface.
Some insects have a waxy coating on the surface of their body that helps them to trap air bubbles and form a waterproof seal, allowing them to move along the surface of water. This waxy coating also helps them to repel water and stay afloat.
Capillarity is the phenomenon of liquids rising or falling in narrow tubes due to surface tension. It is the result of the combination of adhesive forces between the liquid and the walls of the tube and the cohesive forces between liquid molecules. This phenomenon can be seen in everyday life, such as when water rises …
A hydraulic jack is a mechanical device used to lift heavy loads or to apply great forces. It uses the hydraulic equivalent of a mechanical lever, and was also known as a hydrostatic jack. It is used for car jacks, but also for other purposes such as lifting heavy machinery or lifting and moving heavy …
Applying pressure to a liquid can reduce its volume by forcing the molecules of the liquid closer together, making it denser and taking up less space. This is known as compression. Depending on the pressure applied and the type of liquid, the volume can be reduced by up to 50%.
Pascal’s law states that when pressure is applied to a confined fluid, the pressure is transmitted equally in all directions throughout the fluid. This means that when the same pressure is applied to a confined fluid, the same amount of pressure is applied to all parts of the fluid. This law is useful in many …
Relative density is a measure of the density of a material compared to the density of a reference material. It is usually expressed as a ratio of the two densities. The reference material is typically a substance with a known density, such as water for liquids or air for gases. For solids, the reference material …
The principle of floatation states that an object will float if it has a greater density than the fluid it is placed in. This means that the object will displace a volume of fluid equal to its own weight, and the buoyant force of the fluid will be greater than the weight of the object. …