If you drove day and night without stopping for one year without exceeding the legal highway speed limit in the United States, the maximum number of miles you could drive would be closest to:
a. 8 700.
b. 300 000.
c. 500 000.
d. 1 000 000.
e. 32 000 000.
C
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The nucleus, or main solid body, of a comet has a typical size of:
A) a few centimeters. B) a few meters. C) a few kilometers. D) a few hundred kilometers. E) a few thousand kilometers.
Which of the following devices make use of the photoelectric effect?
a. digital cameras b. photocopiers c. laser printers d. solar cells e. all of the above
The cosmological principle states that any observer in any galaxy will see the same general features of the Universe
a. True b. False Indicate whether the statement is true or false
Addition by 1. Components: Vector 
has a magnitude of 4.0 m and points 30° south of east. Vector 
has a magnitude of 2.0 m and points 30° north of west. The resultant vector 
+ 
is given by
A. 10.0 m at an angle 30° south of east. B. 10.0 m at an angle 60° east of south. C. 2.0 m at an angle 60° south of east. D. 2.0 m at an angle 30° south of east. E. 1.0 m at an angle 30° east of south.