Question 3 of 4 · Flow Kinematics and Continuity · Foundation · About 16 min
Track a buffer tank during a valve adjustment
A vertical buffer tank has constant horizontal free-surface area and initially holds water to depth . A feed pump delivers while a drain removes for the next . Find the rise in water level, the final depth, and the water mass accumulated. Use water density .

Given
Tank plan area: 1.80 m²
Initial liquid depth: 0.650 m
Inlet discharge: 0.0320 m³/s
Outlet discharge: 0.0110 m³/s
Elapsed time: 75.0 s
Water density: 1000 kg/m³
Find
Rise in level
Final depth
Mass gained
Assumptions
Constant tank horizontal area.
Steady inlet and outlet flow rates during the stated interval.
No spill or leakage.
Worked solution
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