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Saturday, July 23, 2011

liquid helium

liquid helium at extremely low temperatures shows properties different from other normal liquids , like creeping out along the sides of the vessel, rising into a fountain and so on.




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Three pipes A, B and C can together fill a tank in 8 hours. After working at it together for 2 hours, B is closed and A and C fill the remaining part in 9 hours. Determine the time in which pipe B alone can fill the tank.

Three pipes A, B and C can together fill a tank in 8 hours. After working at it together for 2 hours, B is closed and A and C fill the remai...