Dripstone formations that form on cavern ceilings are called _____________
a. stalactites
b. stalagmites
c. quartz
d. feldspar
a
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How can the Doppler method be used to measure the eccentricity of a planet's orbit?
A) by measuring the speed at which the star orbits the mutual center-of-mass of the star and planet, and using Newton's theory of gravity B) by measuring the time it takes for the star's line-of-sight velocity to cycle from peak to peak, and using Newton's version of Kepler's Third law C) by measuring the asymmetries in the velocity curve D) by measuring the amount by which the starlight is reduced when the planet transits
Compared to Jupiter, Saturn's atmosphere is:
A) more calm with fewer disturbances or storms. B) more uniform with no significant variation in color in the lower cloud levels. C) more violent with larger storm phenomena easily viewed from Earth. D) much thicker causing the visibility of the lower layers to be reduced. E) more colorful with variations in color easily viewed from Earth.
In an engine operating in the Otto cycle, the final volume of the fuel-air mixture is one sixth the initial volume. Assume ? = 1.4 . The maximum theoretical efficiency of this cycle is
a. 17%. b. 49%. c. 51%. d. 56%. e. 83%.
28Al decays by beta-minus decay. What is the daughter nucleus?
A. 28Mg B. 27Al C. 24Na D. 28Si E. 27Si