A rectangular block of wood has a dimension of 20cm x 20 cm x 50cm and float in fresh water. If the wood is submerged to a depth of 25 cm, what is the density of the wood in kg/m^3?

The speed v at which a rigid sphere falls through a viscous fluid depends on the difference in density between the sphere and the fluid, Ap, the radius of the sphere, a, and the viscosity of the fluid, 7, and is given by 2 gApa? v = 9 where q is the acceleration due to gravity. (a) East Coast beaches are dominated by quartz sand. A medium-sized grain of sand has a radius of 0.5 mm. The density of quartz is 2.65 g/cc (2650 kg/m³); the density of water is about 1 g/cc (1000 kg/m³). The viscosity of water at 20°C is 10-3 Pa s. The acceleration due to gravity is about 9.81 m/s². How long will it take for the grain of sand to sink through 10 m of water? (b) How fast does a sphere of radius 1 cm fall compared to a sphere of radius 0.5 mm in the same fluid? (c) Where a stream enters a pond, it is often observed that coarser sediment such as gravel is deposited near the mouth of the stream, while finer sediments such as sand and silt are deposited farther into the pond. Explain this…

-:Pisometer O two different fluids are used, and it can measure suction pressure and larger pressure than a piezometer it is used to find the difference in pressure between two points it is a type of manometer and it is a tube that is connected to the pipe containing the fluid which is pressure is to be measured

Calculate the maximum membrane stress in the wall of shells having the following shapes. The vessel walls are 2.5 mm thick and subject to an internal pressure of 6 bar. a) An ellipsoid, major axis 2 m, minor axis 1.8 m; b) A torispherical head.