In a Nb nucleus, the number of protons, neutrons, and electrons is
A) 41, 52, 93.
B) 41, 52, 52.
C) 41, 52, 41.
D) 41, 52, 0.
E) 52, 41, 0.
D
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Which of the following is ordered correctly from smallest to largest?
a. arc minute, arc second, degree b. degree, arc minute, arc second c. arc minute, degree, arc second d. arc second, arc minute, degree
The belts and zones of Jupiter are
A) alternating bands of rising and falling air at different latitudes. B) cyclonic and anticyclonic storms. C) names for different cloud layers on Jupiter. D) alternating regions of charged particles in Jupiter's magnetic field. E) the thermosphere and stratosphere respectively.
The range of frequencies that a radio telescope is sensitive to is referred to as its
A) sensitivity B) band C) bandwidth D) bandpass
In 1998, it was announced that the expansion of the universe is accelerating. What does this imply from the perspective of the big bang?
a. A force exists that we knew nothing about that causes the acceleration. b. The universe must be closed. c. The universe is finite. d. The amount of dark matter must be greatly less than the amount of normal matter. e. The universe must be infinitely old.