A bullet fired from a gun is an example of mechanical kinetic energy, while the gunpowder before firing is an example of chemical potential energy. Kinetic energy is the energy of a particle or wave in motion, while potential energy is the potential of this particle or wave to move.Know More
Kinetic energy is possessed by any particle or wave moving relative to a certain reference frame. The faster a body is moving, the more kinetic energy it possesses. The energy of a body is directly proportional to the square of its velocity in each direction.
Potential energy is possessed by virtue of a body’s position or state. Potential energy is also relative, depending on what it is measured in reference to. Gravitational potential energy is directly proportional to the height of the body relative to a surface datum. Measuring the height of a ball relative to the ground level of a tall building gives one value of potential energy, while measuring the height of a ball relative to the top of this building gives another value. General conventions use positive values of gravitational potential energy for bodies above the datum surface and negative values for those below the datum surface.
Other forms of potential energy include the electrical potential stored in a battery and the mechanical potential stored in a spring.Learn more about Physics
Geothermal energy is created at the center of the Earth, around 4,000 miles below the surface, through hot spots in plate boundaries. These hot spots contain more energy than all the gas and oil resources in the world and can be found underground and on the Earth's surface in the form of hot springs, volcanoes and geysers.Full Answer >
Energy cannot be created, according to the law of the conservation of energy, which was first published in an 1842 scientific article by the German Physicist Julius Mayer. Based on the same principle, energy cannot be destroyed either. In an isolated system, energy can be transformed from one form to another, but the total amount of energy within the system remains constant.Full Answer >
Some examples of magnetic energy are a magnetic resonance imaging, or MRI, machine, a compass, the Earth's magnetic field and the starter in a car. Maxwell's equations relates magnetic energy to electric energy. These equations describe how magnetic and electric fields are generated and altered by each other.Full Answer >
Nuclear energy provides power, heat and electricity by splitting atoms in a process called nuclear fission. The heat produced by fission creates steam that powers the turbines, thus generating electricity. Nuclear energy serves as a dependable source of power because it is not susceptible to inclement weather and climate conditions.Full Answer >