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Q1. A ball has a diameter of 3.84 cm and average density of 0.0853 g/cm3. What force is required to hold it completely submerged under water?

Q2. A thin flat plate is installed in a water tunnel as a splitter. The plate is 0.3 m long and 1 m wide. The free stream speed is 1.60 m/s. laminar boundary layers form on both sides of the plate. The boundary-layer velocity profile is approximated as parabolic. Determine the total viscous drag force on the plate assuming that the pressure drag is negligible.

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