A(n) ____ orbit is one where the orbiting object is always above the same location on Earth's surface
a. elliptical
b. geosynchronous
c. closed
d. hyperbolic
e. parabolic
b
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Why is it believed that the rings of Saturn could not have formed just as the planet itself formed?
a. Over time the solar wind should have blown away the particles in the rings. b. The particles in the rings should eventually fall into the planet in a short period of time. c. The rings are made of ice particles which would have been vaporized by the heat released as Saturn formed d. The outer planets do not have enough mass to hold on to the rings.
Assume that an interionic pair potential between K+ and Cl– ions can be approximated by Equation 2.15. Assume that the repulsive ion core interactions can be modeled with a power of m=12. Experimentally it has been determined that the energy to separate one pair of K+ and Cl– ions is 5.0 eV, and that the equilibrium interionic separation is equal to 0.266 nm. Use this experimental data to determine the value of B for an ion pair. Use the SI system of units for this problem.
What will be an ideal response?
Based on observations of the universal expansion, the age of the universe is about
A) 14,000 years B) 14 million years C) 14 billion years D) 14 trillion years
The star named Sheat is of M2 II spectral type and luminosity class. Based on this information, which of the following are true? I. Sheat has a surface temperature less than the Sun. II. Sheat has a diameter that is greater than that of the Sun. III. Sheat is more luminous than the Sun. IV. Sheat is located near the upper left-hand corner in the H-R diagram
a. I & II b. II & IV c. II, III, & IV d. I, II, & III e. I, II, III, & IV