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Answer the following statement true (T) or false (F)
True
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Which of the following stars is reddish in color?
A. F6 B. A0 C. K9 D. G5 E. B2
One experimental observation that demonstrates Einstein's ideas on the relativity of time, is
A) electromagnetic waves from the early stages of the development of the universe have slower rates of vibration. B) muons "live" longer when moving rapidly than they do when they are at rest. C) a laser beam emitted from an orbiting satellite is observed from Earth. D) rapidly-rotating neutron stars spin more slowly than they would if they weren't moving rapidly away from us. E) the recent discovery of very fast-moving particles known as tachyons.
The figure below shows the orbit of a comet about the sun. The comet has the greatest velocity when traveling
A. from A to B.
B. from B to C.
C. from C to D.
D. from D to E.
In which wavelengths have the births of new stars been best mapped recently?
A) gamma rays B) extreme ultraviolet C) infrared D) microwave E) radio