By burning it
The burning of coal itself does not release electrical energy, coal is burned to drive a turbine, the turbine in turn produces electricity.
They burn it. It's the heat and expanding gases from the coal being burned which provides the energy.
When coal is burned, the chemical energy stored in its molecular bonds is released as heat and light energy. This process involves the combustion of coal in the presence of oxygen, resulting in the breaking of chemical bonds and the release of energy in the form of heat.
An unburned lump of coal is in a state of potential energy, as it has the potential to release energy when burned. Kinetic energy is associated with motion, which is not present in the unburned lump of coal.
It may - this usually happens when you burn it.
All can release energy.
All release energy.
we release the potential energy to heat energy to do work
You can't make energy, but you can release it from fuels such as coal, oil, gas, and uranium.
coal have chemical energy
The main types of energy in coal are chemical energy, which is released when coal is burned, and potential energy stored within the coal itself. When coal is burned, the chemical energy is converted into thermal energy, which can be used for generating electricity or heating.
To release the same amount of energy as one kilogram of uranium undergoing nuclear fission, approximately 3.6 metric tons of coal would need to be burned. Uranium undergoes much more efficient energy release through fission compared to burning coal.