The magnitude of force on one side of a circular surface of unit area, with centroid 4 m below a free water surface, is: Select one: Oa. less than 30 kN b. dependent upon orientation of the area c. greater than 40 kN d. The product of the area and the vertical distance from free surface to pressure center e. None of the above

Explain the difference laminar and turbulent flow. explain it with the shear stress and the velocity profiles.

An ideal otto cycle with air as the working fluid has a compression ratio of 8. the minimum and maximum temperatures in the cycle are 300 k and 1340 k. use constant specific heats at room temperature to determine (a) the amount of heat transferred to the air during the heat- addition kj/kg, (b) the thermal efficiency, and (c) the thermal efficiency of a carnot cycle ope limits. process, in rating between the same temperature

The characteristic roots of a dynamic system are: 1.7920 1.8160 i, -1.7920 1.8160 i, -0.4160 what is the order of this system? what are the settling time and damping ratio of the system?