Engineering test

Two Tanks 10 m in height connected with a smooth pipe (loss in pipe is negligible) , the first one is full of water (10 m) and the other one is empty , calculate the Head required to transfer the water from tank one to the empty tank ??
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MODEL ANSWER (what happened in Hegleig )|
Part B : if the pipe is not smooth like in part A calculate the Head again ??
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MODEL ANSWER ( Our people bloods and souls )
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لك الله يا بلدي
و بالتوفيق
April 2012