What technology do astronomers use to search for extraterrestrial life?
a. space observatories
b. radio telescopes
c. refracting telescopes
d. reflecting telescopes
e. FM radio and televisions
b
You might also like to view...
If Star A is closer to us than Star B, then Star A's parallax angle is ________
A) fewer parsecs than that of Star B B) hotter than that of Star B C) smaller than that of Star B D) larger than that of Star B
Which of the following materials is not cross-linked?
(a) Rubber (b) Epoxy (c) UHMWPE (d) Polyester
You want to swim straight across a river that is wide. You find that you can do this if you swim at an angle of ? = 28° from the upstream direction at a constant rate of relative to the water
At what rate does the river flow? The angle ? is measured from the river bank (directly upstream is while directly across the river is A) 1.3 m/s B) 0.70 m/s C) 1.6 m/s D) 1.8 m/s
The inductance of a tuning circuit of an AM radio is 4.00 mH. Find the capacitance of the circuit required for reception at 1200 kHz.
A. 2.10 pF B. 4.40 pF C. 21.2 pF D. 43.4 pF E. 27.6 pF