If a star has an apparent magnitude of 8 and an absolute magnitude of 6 it is
A. much farther than 10 parsecs away.
B. slightly farther than 10 parsecs away.
C. much closer than 10 parsecs away.
D. slightly closer than 10 parsecs away.
E. exactly 10 parsecs away.
Answer: B
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An atom is ionized if one of its electrons jumps to a higher energy level in the atom
a. True b. False Indicate whether the statement is true or false
A 10 solar mass main sequence star will produce which of the following remnants?
A) black hole B) white dwarf C) neutron star D) none of the above
Suppose an object is hanging from the end of a spring. Let the spring’s length when the object is hanging at rest be L. Now suppose we pull the object downward until the spring has been stretched a length of 2L. By what factor has the force that the spring is exerting on the object increased?
A. The spring force is the same in both cases.
B. 
times stronger
C. 2 times stronger
D. 4 times stronger
E. The answer depends on the spring’s relaxed length.
The earth formed 4.57 X 10^9 years ago. What is this time in seconds?
A. 1.67 X10^12 S B. 4.01 X 10^13 S C. 2.40 X 10^ 9 S D. 1.44 X 10^17 S