The document contains solutions to two problems involving fluid mechanics. The first problem calculates the difference in elevation h between two water reservoirs using a manometer reading of 25 cm. The second problem calculates the force F on a gate submerged in oil and the center-of-pressure position X, given the gate's dimensions, oil density, and the water depth and angle. It finds F to be 38.83 kN and X to be 0.615 m.