1.On a large lake without waves, how far from shore is a sailboat when the top of its 8m mast disappears from view of a person whos eye height is 1.5 m above the waters edge?
2.The square gate shown is eccentrically pivoted so that it automatically opens at a certain value of h. What is that value in terms of l?
3.A wide flange steel beam shown in figure supports a permanent concrete masonry wall, floor slab; architectural finishes mechanical and electrical systems. Determine the dead uniform load in kips per linear foot acting on the beam.
4.How was this answered reached? what equation was used? equation of a line? could you please explain how the answer was reached and a detailed explanation of the math behind it.