Dispersion forces
the centripetal force along with the attractive force of the electron on the nucleus are balanced by a phenomnon known as the strong nuclear force which prevents the electron from coliding with the nucleus
There is no known material that can completely repel gravitational force. Gravitational force affects all matter and is a fundamental force of nature that cannot be blocked or neutralized by any material substance.
A baseball is a great example of an internal force. The particles holding the baseball together is an internal force. But a baseball bat hitting the baseball is not an internal force, because an internal force is a force exerted by one part of a structure on another. The bat hitting the ball is an external force. Another example is a car. The pistons pushing the rods, the axle pushing the wheels, the wheels moving the car...etc. All these things are internal forces working on the car because the these things are all inside the car. But the friction created by the wheels of the car on the ground is an external force, as is the force holding the car up. Hope this helps!
The inward force needed for circular motion is called centripetal force. It is directed towards the center of the circle and is required to keep an object moving in a curved path instead of a straight line. Without this force, the object would continue in a straight line tangent to the circle.
1. Inertia 2. Friction 3. A force when you move your pen or hand
The force of attraction between molecules below the surface of a liquid is called cohesive force. This force creates an inward pull, causing the liquid molecules to stick together and form a well-defined surface.
Water molecules cohere to form a liquid due to hydrogen bonding between the molecules. This hydrogen bonding leads to a net attractive force between the molecules, allowing them to stay close together in a liquid state.
The force between the molecules in the liquid state will be weaker compared to the solid state. This is because the intermolecular forces holding the molecules together in a liquid are generally weaker than those in a solid.
In the liquid state of ammonia (NH3), the predominant intermolecular force is hydrogen bonding. This occurs due to the presence of a nitrogen atom bonded to hydrogen, where the nitrogen atom is highly electronegative, creating a dipole moment. The hydrogen bonds between NH3 molecules are responsible for its relatively high boiling point compared to similar-sized molecules that only exhibit weaker van der Waals forces. Additionally, dipole-dipole interactions also play a role, but hydrogen bonding is the dominant force.
The inward force among the molecules of a liquid is Surface Tension
Both the friction between the moving body and the liquid, and between the molecules of the liquid. And other intermolecular forces the keep the liquid together (like Van-der-Waal force)
The inward force among the molecules of a liquid is known as cohesive force. It is responsible for keeping the molecules together and creating surface tension in the liquid.
The intermolecular force between BF3 molecules in liquid state is London dispersion forces. This is because BF3 is a nonpolar molecule and London dispersion forces are the primary intermolecular force among nonpolar molecules.
The intermolecular force of ClF is dipole-dipole interaction. This is because ClF is a polar molecule, with a significant difference in electronegativity between chlorine and fluorine causing a partial positive and partial negative charge, leading to attraction between the molecules.
Viscosity is the measure of a fluid's resistance to flow, determined by the friction between its molecules as they move past each other. It is not specifically an inward force among molecules, but rather a property that affects how easily a liquid can flow.
The inward force among the molecules of a liquid is Surface Tension
Surface tension is a result of cohesive forces between liquid molecules at the surface, so it is a non-contact force that acts at the interface of the liquid with its surroundings.