what is a potential energy ??? name the types of potential energy and explain them ..
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pe is the type of stored energy the wrd potential maens CAPASITY and there are mant types of pe on that solids have lowPE liquids have high PE
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Potential energy is a type of energy that is "hidden" in some way. It is a type of energy that can be converted to other forms and often is related to some attractive or pushing forces.
Elastic Potential Energy
Anything that can act like a spring or a rubber band can have elastic potential energy.
Let's take the rubber band for example. To stretch the rubber band you have to use energy. That energy has now been turned into elastic potential energy. To get that energy back, just let go of the rubber band and its potential energy is converted primarily into kinetic energy.
Springs work the same way, but you can either stretch or compress them. Wind-up watches store potential energy in an internal spring when you wind them and slowly use this energy to power the watch.
Gravitational Potential Energy
There is a constant attractive force between the Earth and everything surrounding it, due to gravity.
To lift something off the ground it takes energy, so just by lifting an object, that object now has higher gravitational potential energy.
Gravitational potential energy is typically converted into kinetic energy (an object falling) before it is converted into any other type of energy.
Hydroelectric power is generated this way. As the water falls, it turns a turbine, which pushes electrons around, creating an electric current.
Chemical Potential Energy
A chemical bond can be thought of as an attractive force between atoms.
Because of this, atoms and molecules can have chemical potential energy.
Anytime two atoms form a strong covalent or ionic bond or two molecules form a weak van der Waals bond, chemical energy is converted into other forms of energy, usually in the form of heat and light.
The amount of energy in a bond is somewhat counterintuitive - the stronger or more stable the bond, the less chemical energy there is between the bonded atoms.
Strong bonds have low chemical energy and weak bonds have high chemical energy.
Lot's of heat and/or light energy is released when very strong bonds form, because much of the chemical energy is converted to heat and/or light energy. The reverse is true for breaking chemical bonds. It takes more energy to break a strong bond than a weak bond. The breaking of a bond requires the absorption of heat and/or light energy which is converted into chemical energy when the bond is broken.
See an example below of how a chemical reaction converts chemical energy into heat and light energy:
Elastic Potential Energy
Anything that can act like a spring or a rubber band can have elastic potential energy.
Let's take the rubber band for example. To stretch the rubber band you have to use energy. That energy has now been turned into elastic potential energy. To get that energy back, just let go of the rubber band and its potential energy is converted primarily into kinetic energy.
Springs work the same way, but you can either stretch or compress them. Wind-up watches store potential energy in an internal spring when you wind them and slowly use this energy to power the watch.
Gravitational Potential Energy
There is a constant attractive force between the Earth and everything surrounding it, due to gravity.
To lift something off the ground it takes energy, so just by lifting an object, that object now has higher gravitational potential energy.
Gravitational potential energy is typically converted into kinetic energy (an object falling) before it is converted into any other type of energy.
Hydroelectric power is generated this way. As the water falls, it turns a turbine, which pushes electrons around, creating an electric current.
Chemical Potential Energy
A chemical bond can be thought of as an attractive force between atoms.
Because of this, atoms and molecules can have chemical potential energy.
Anytime two atoms form a strong covalent or ionic bond or two molecules form a weak van der Waals bond, chemical energy is converted into other forms of energy, usually in the form of heat and light.
The amount of energy in a bond is somewhat counterintuitive - the stronger or more stable the bond, the less chemical energy there is between the bonded atoms.
Strong bonds have low chemical energy and weak bonds have high chemical energy.
Lot's of heat and/or light energy is released when very strong bonds form, because much of the chemical energy is converted to heat and/or light energy. The reverse is true for breaking chemical bonds. It takes more energy to break a strong bond than a weak bond. The breaking of a bond requires the absorption of heat and/or light energy which is converted into chemical energy when the bond is broken.
See an example below of how a chemical reaction converts chemical energy into heat and light energy:
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