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After the ball stops moving, most of the energy has been converted into heat energy.
I guess wood for fires, but coal has been used for a long time too.
Wind has been used as a source of energy for thousands of years. No one remembers who first invented the sail or the windmill.
In recent years, LG appliances have been made to be energy efficient. LG claims that it's third generation refrigerator compressor is the most energy efficient in the world.
because a conservation law states that a particular measurable property of an isolated physical system does not change as the system evolves.
helloooooooo!!! um......oil, coal, gas, water and nuclear energy. Tehe
It has been fossil oil.
bananas
Britain's main energy sources come from fossil fuels and electricity. In recent years, Britain has been able to produce 60 percent of its consumed natural gases.
As of 2013, World War II has been over for 68 years.
Scana Energy Corporation has been in business for over a century!Believe it or not, they have been open for a total of one-hundred and sixty years.
Knowledge about atomic nuclei has been used to produce energy.
the worlds oldest man is 105 years old and of course he still works he has also been on the weakest link last year in 2009
In some countries geothermal energy has been around for thousands of years and has been used for cooking and heating.
ENERGY source has been archieved.The worlds energy reserves are not unlimited.It provided daily insight into the financial.We can only conserve it by not throwing garbage anywhere and by using the 3R's(reduce,recycle,and reuse).
145 years
5 billion years