Telescopes designed to study the earliest stages in galactic lives should be optimized for observations in ________
A) infrared light B) visible light C) X-rays D) radio waves
A
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If the Sun passes directly overhead on at least one day per year, then
a. you are within 23.4° latitude of the equator. b. you are within 66.6° latitude of the equator. c. you must be exactly on the equator. d. you could be anywhere because this occurs at least once per year at any location on the Earth.
Which of the following does not increase the strength of a polymer?
(a) Orienting molecules (b) High molecular weight (c) Cross-links (d) Plasticizers
A 4.0-cm tall apple is 20 cm in front of a plano-convex lens of focal length 75 cm. (a) Find the location of the image of the apple. Is it a real or a virtual image? (b) How tall is the image of the apple? Is it upright or inverted?
What will be an ideal response?
Chromatic aberration creates images fringed with color when using which kind of telescope?
A. radio B. adaptive optic C. interferometer D. reflector E. refractor