Twenty is asking a lot! Do you mean energy production or types of energy?
Types- Electrical, mechanical, heat, radiation, sound, gravitational, wind.
Production- Coal, oil, natural gas, nuclear, solar, wind power, geothermal, tidal, biofuels, hydro.
That's nearly twenty, but some of these headings overlap each other.
cell phone, I-Pod
coriander coriander
what are the uses of energy?
what are different kind of energy give a meanings and examples
Potential energy is when you do work against a conservative force. Examples are gravitational potential energy; the stored energy in a spring; chemical energy; and nuclear energy.
rubbing of two wood
food or gas
A rock on a hill
could you please give me examples of your work
eats
there is actually no non examples of geothermal
A parked car is potential energy =]- aim wave ; twinxlocksxin