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Results tagged with energy-conservation
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user 46752
The law of conservation of energy, which states that the amount of energy in a system is constant. For questions about Earth's environment, see the climate-science tag instead.
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If I'm floating in space and I turn on a flashlight, will I accelerate?
See Solar Sails http://en.wikipedia.org/wiki/Solar_sail.
As other people have pointed out, this is extremely inefficient energy-wise, but has the advantage of being purely passive - no need to carry …
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