28. A simple curve have tangents AB and BC intersecting at a common point B. AB has an azimuth of 180° and BC has an azimuth og 230°. The stationing of the point of curvature at A is 10 + 140.26. If the degree of the simple curve is 4". Compute the stationing of point "X" on the curve on which a line passing through the center of the curve makes an angle of 58° with the line AB, intersects the curve at "X". ANS: 10 + 300.26

In a lake the water is moving and at each point in the lake there is a velocity vector so, we have a well-defined velocity field V at any point of the lake. Let us consider a thinkable curve C in the S. lake. Then the line integral V.T ds from the velocity field V with respect to the arc-length C measure over the curve (path) C sums (adds up) the tangent components to the curve C of the velocity field V along the points on the curve C. In this sense, the line integral measures how much of the water (the fluid) is aligned with the curve C. In other words, the above line integral measures, indicates how much of the water (the fluid) tends to circulate around the curve C. Hence, we define the circulation s done by the velocity field V around the curve C as r= V.T ds C In physics, circulation is the line integral of a vector field around a close curve. In fluid dynamics the field is the fluid velocity field. In electrodynamics, it can be the electric or the magnetic field. Suppose that a…

The slope dv/dx is positive when the tangent to the elastic curve slopes upward to the right. O False True L MO B UN

Given for a compound curve: plus of PI = 14 + 29.31 , Δ = 97 ° 35 ′ 15 ″ ; the first radius R 1 = 400 ′ , Δ 1 = 63 ° 22 ′ 18 ″ , R 2 = 800 ′ . Compute the pluses of PC, PCC, and PT and the length