Two horizontal curves on a bobsled run are banked at the same angle, but one has twice the radius of the other. The safe speed (for which no friction is needed to stay on the run) for the smaller radius curve is v
What is the safe speed on the larger-radius curve? A) v /
B) 2v
C) v
D) v/2
C
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The specific heat at constant volume of an ideal gas depends on:
A. the temperature B. the pressure C. the volume D. the number of molecules E. none of the above
Globular clusters can be used to measure the distance of nearby galaxies
a. True b. False Indicate whether the statement is true or false
The relatively small number of impact craters and the near absence of small craters on the surface of Venus are thought to be a result of:
A) the soft and resilient nature of the Venusian surface. B) the thick Venusian atmosphere. C) the position of Venus in the solar system—not many meteoroids cross Venus' orbit. D) Venus' lack of a satellite. E) the ancient oceans that once existed on Venus.
The precipitation of and crystallization of evaporite minerals is very similar to the crystallization of minerals from a magma. The first evaporite minerals to precipitate (crystallize) are those with the
A) lowest solubility. B) highest melting point. C) lowest silica content. D) highest solubility.