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- QUESTION 15 Which of the following properties physical properties best determines the buoyancy of an object? a. Its masS Ob. Its weight. C. Its density Od. Its volume Oe. Its lengthThe definition of no-slip condition is: Select one: O a. Fluids accelerate at solid boundaries due to turbulence, causing maximum flow velocity at boundary surfaces. Fluids stick to solid boundaries due to viscosity, causing flow velocity at boundary surfaces to be near zero. O b. O c. Fluids decelerate at solid boundaries due to surface roughness, causing flow velocity at boundary surfaces to be smaller than that of the main flow, but still more than zero. O d. Fluids stick to solid boundaries due to viscosity, causing flow velocity at boundary surfaces to be the same as that of the surface.