The are portable.
Energy
Yes
batterys
batterys
electric train run by obsorving electrical energy from the trans mission lines and storing that energy in the batterys and transmitting that energy to the wheels
it needs to eat eat copper and metal or maybe batterys at times to get energy
What are iran's energy sources?
The energy sources that I am most excited about all have lower carbon emissions, compared to conventional energy sources. These include Biomass Energy, Wind Energy, Solar Energy, Geothermal Energy, and Hydroelectric Energy sources.
electrical
Is wind and sun a pair of sources of energy
what is origin of non-renewable energy sources, including how energy became trapped in these souces
There are many of energy sources in earth like solar energy, geothermal energy, hydroelectricity, tide energy, nuclear energy.