Hydraulics and Fluid Mechanics in ME
In series-pipe problems

the head loss is same through each pipe
the discharge is same through each pipe
a trial solution is not necessary
the discharge through each pipe is added to obtain total discharge

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Hydraulics and Fluid Mechanics in ME
The conditions for the stable equilibrium of a floating body are

the center of buoyancy and the center of gravity must lie on the same vertical line
all the above are correct
the meta-center should lie above the center of gravity
a righting couple should be formed

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