Do the data support the notion that the Arch is in the shape of a parabola?

1. A reflecting telescope contains a mirror shaped like a paraboloid of revolution. If the mirror is 4 inches across at its opening and is 3 inches deep, where will the collected light be concentrated?

2. The Gateway Arch in St. Louis is often mistaken to be parabolic in shape. In fact, it is a catenary, which has a more complicated formula than a parabola. The Arch is 630 feet high and 630 feet wide at its base.

(a)Find the equation of a parabola with the same dimensions. Let x equal the horizontal distance from the center of the arch.
(b)The table below gives the height of the Arch at various widths; find the corresponding heights for the parabola found in (a).

 

(c)Do the data support the notion that the Arch is in the shape of a parabola?

find the cost of your paper

Write down an expression in terms of discrete normal modes for the field of a point source received on a vertical array.

For an acoustic field in a waveguide, how would you take advantage of the orthogonality of normal modes to construct a modal, rather than plane-wave beamformer? Use a vertical array…..

What is the definition of a liability?

  What is the definition of a liability? (Section 10.2) 1. What is the distinction between a long-term liability and a current liability? (Section 10.2) 2. What is the effect….

Explain why each of the following is recognised as a provision in the statement of financial position (balance sheet) of a telecommunications company:

Explain why each of the following is recognised as a provision in the statement of financial position (balance sheet) of a telecommunications company: (a) On 15 December Year 2, the….