The Milky Way shows evidence that over its history it has merged with and "cannibalized" smaller galaxies.
Answer the following statement true (T) or false (F)
True
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In the context of the electromagnetic spectrum, which of the following forms of electromagnetic radiation has a shorter wavelength than the shortest wavelength of visible light?
A) Red light B) Microwaves C) Radio waves D) Ultraviolet light
Fundamental Forces: Which of the following statements is not true of the strong nuclear force?
A. The nuclear force has a short range, of the order of nuclear dimensions. B. For two protons that are very close together, the nuclear force and the electric force have about the same magnitudes. C. The nuclear force does not depend on charge. D. A nucleon in a large nucleus interacts via the nuclear force only with nearby nucleons, not with ones far away in the nucleus. E. The nuclear force affects both neutrons and protons.
Intensity of Sound: If the intensity level of one trombone is 70 dB, calculate a reasonable estimate for the intensity level of 76 trombones all playing simultaneously in the same place?
A. 146 dB B. 89 dB C. 70 dB D. 76 dB E. 82 dB
Distant dark mountains appear bluish because
A) they are far away. B) yellow is being scattered. C) you're looking at low-level blue sky between you and the mountain. D) of nature's wonderful preferences.