Some of these frictions depend on the Pressure, temperature of atmosphere.
Static Friction: This is the friction force when two objects in contact are not moving relative to each other. This friction is higher than kinetic friction.
Kinetic or Dynamic friction: this the friction force opposing the motion of objects, when two objects in contact are in motion relative to each other. It is less than the static friction. The two surfaces are rubbing against each other as they move.
Rolling friction: This is the friction when two objects are in contact and one object is rolling over the other - like a wheel on a road. The point of contact appears as stationary. The rolling friction is very less compared to static friction & dynamic friction.
Lubricated friction: this is the friction between two solid surfaces in contact with a layer of lubricant fluid flowing in between them. This friction is the least.
Fluid friction - viscosity : this is friction between two adjacent layers that are moving relative to each other at different speeds in a fluid. This is not high.
Internal friction: when an object is compressed and forced to deform, like in a piece of rubber, there is friction between the layers, that opposes this deformation.
Skin friction is the friction that opposes movement of a fluid across a solid surface. This is also called drag. When a coin is dropped in water, there is a friction called drag on the coin. Same is the case when a ball is thrown, a drag is experienced by the ball due to the drag of air.
Do you have any other information? Like the velocity of the wave?
If a surplus exists, then quantity demanded is less than quantity supplied, there will be pressure on price fall toward equilibrium.
When the quantity of supply of goods matches the demands for goods, it is called the equilibrium price. The market is said to be in a state of equilibrium when the main situation is in the phase of consolidation. Then, it can be concluded that demand and supply are comparatively equal. Equilibrium price examples are discussed below as well.
We can find the equilibrium price by using the equilibrium price formula. These are the steps:
- Calculate the supply function,
- Calculate the demand function,
- Set the equal amount of quantities for the demand and supply,
- Put this equilibrium price into a supply function,
- Check the result by putting the equilibrium price into the demand function.
A surplus implies the government has extra funds. These funds can be used toward public debt, to start new events, social service or Medicare service and also in reducing interest rates which can help the economy.
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