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LifeH2O earned this badge 5 times |
dec 19 at 13:51
Can magnets rotate infinitely?
nov 4 at 23:48
Why two objects get charged by rubbing
apr 6 '12 at 18:04
Why glass is transparent?
aug 11 '11 at 3:26
Why does holding something up cost energy while no work is being done?
apr 14 '11 at 1:42
What is the difference between a white object and a mirror?