An element for sensing local shear stress is positioned in a flat plate 1 meter from the leading edge. The element simply consists of a small plate 1 cm x 1 cm, mounted flush with the wall, and the shear force is measured on the plate. The fluid flowing by the plate is air with a free-stream velocity of 30 m/s, a density of 1.2 kg/m3 , and a kinematic viscosity 1.5·10-5 m2 /s. The boundary layer is tripped at the leading edge. What is the magnitude of the force due to shear stress acting on the element?
Answers: 3
Physics, 22.06.2019 15:20
Arigid tank is divided into two equal parts by a partition. one part of the tank contains 3 kg of compressed liquid water at 400 kpa and 60°c while the other part is evacuated. the partition is now removed, and the water expands to fill the entire tank. determine the entropy change of water during this process, if the final pressure in the tank is 40 kpa. use steam tables.
Answers: 3
Physics, 22.06.2019 16:00
Two balls, each with a mass of 0.5 kg, collide on a pool table. is the law of conservation of momentum satisfied in the collision? explain why or why not
Answers: 1
Physics, 22.06.2019 17:30
You can watch static electricity in action by rubbing an inflated balloon against your hair. your hair will actually stand on its end! it does this because each hair becomes charged, and they all repel one another.
Answers: 3
An element for sensing local shear stress is positioned in a flat plate 1 meter from the leading edg...
Mathematics, 16.10.2019 12:50
Mathematics, 16.10.2019 12:50
Mathematics, 16.10.2019 12:50
Mathematics, 16.10.2019 12:50
Mathematics, 16.10.2019 12:50
Mathematics, 16.10.2019 12:50
Chemistry, 16.10.2019 12:50
History, 16.10.2019 12:50