The most distant stars we can currently measure stellar parallax for are approximately
A) in the Andromeda Galaxy.
B) 1,000 parsecs away.
C) 5 parsecs away.
D) 10,000 parsecs away.
E) halfway across the Milky Way Galaxy.
B
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A 100 gram glass container contains 200 grams of water at 
A 200 gram piece of lead at 150
is added to the water in the container. What is the final temperature of the system? (specific heat of water 
specific heat of glass 837.2 J/km 
specific heat of lead = 127.7 J/km
A. 12
B. 14
C. 23
D. 31
E. 37
Why are massive main sequence stars not likely to have planets that contain life?
a. The life zones around these stars is too small. b. These stars would sweep away all of the material from which planets could form. c. These stars are too hot to allow water to exist as a liquid on any planets that might form. d. These stars are on the main sequence for too short a time to allow life to evolve. e. These stars are almost always binaries and planetary orbits are unstable around binaries.
Uniform Electric Fields: Consider a uniform horizontal electric field of 50 N/C directed toward the east. If the electric potential measured at a given point is 80 V, what is the potential at a point 1.0 m directly west of that point?
A. 30 V B. 50 V C. 80 V D. 130 V
Wave Characteristics: Which one of the following types of electromagnetic wave travels through space the fastest?
A. radio waves B. infrared C. ultraviolet D. microwaves E. They all travel through space at the same speed.