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Civil Engineering Building Materials Difficulty: Medium

In a two dimensional incompressible steady flow around an airfoil, the stream lines are 2 cm apart at a great distance from the airfoil, where the velocity is 30 m/sec. The velocity near the airfoil, where the stream lines are 1.5 cm apart, is The ratio of the stresses produced by a suddenly applied load and by a gradually applied load on a bar, is The water face of the guide banks, is protected by The bearing capacity of a water logged soil, may be improved by The ratio of the area of cross-section of a circular section to the area of its core, is