Why is a satellite dish shaped in the form of a parabola?
What will be an ideal response?
The parabolic shape means that electromagnetic energy arriving from a distant satellite is
reflected to a single focus point. By aiming the dish at a satellite and placing a detector at the focus
point, a designer can guarantee that a strong signal is received.
You might also like to view...
It is preferred practice to use a(n) ____________ as an array's size declarator.
a. variable b. literal value c. named constant d. object
You can remove a column of data in an Excel spreadsheet by:
A) right-clicking anywhere in the column and pressing the Delete key. B) selecting the data in the column, double-clicking, and then selecting Delete from the shortcut menu C) selecting the data in the column, right-clicking, and then selecting Delete from the shortcut menu. D) double-clicking anywhere in the column and pressing the Delete key.
________ is an example of a background style listed in the Background Styles gallery
A) Civic B) Style A C) Style 10 D) Aspect
On a join line between two Access tables which have a one-to-many relationship, how is the "many" indicated on the line?
A) There is no indication. B) Infinity sign C) Plus sign D) The word "Many"