1.A 2-ft diameter circular pipe has a Manning's n of 0.013 and a bed slope of 2.0 X 10^-3. What is the uniform flow rate in this pipe if it is completely full (Qf) in ft^3/s? What is the centerline uniform water depth (y0) in the channel if the flow, Q = 6.0 ft^3/s?
2.What is the principal alloy in steel and why is it added to steel when in molten state during manufacture.
3.Four forces act on a small airplane in flight: its weight (26 kN), the thrust provided by the engine (9 kN), the lift provided by the wings (25 kN), and the drag resulting from its motion through the air (3 kN). Determine the resultant of the four forces and its line of action with respect to the axis of the plane.