Looking through your telescope tonight, you observe a distant galaxy called RXJ1800 and notice that it is very near in the sky to the bright star Vega. What can you conclude from this observation?
A) RXJ1800 and Vega will both set in the west at about the same time.
B) Vega orbits the center of mass of RXJ1800.
C) Vega and RXJ1800 must be no more than a few light-years apart.
D) If you observe them again in a few nights, RXJ1800 and Vega will be farther apart than they appear tonight.
A) RXJ1800 and Vega will both set in the west at about the same time.
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A water rocket, launched from the ground, rises vertically with acceleration of 20 m/s2 for 1.0 s when it runs out of "fuel.". Disregarding air resistance, how high will the rocket rise?
a. 15 m c. 61 m b. 30 m d. 102 m
Two cars are traveling down the highway in the same direction. Car A is traveling at 30.0 m/s and car B is passing car A at a relative speed of 3.0 m/s. Using Galilean relativity to calculate the speed of car B relative to the highway results in an answer incorrect by how many m/s?
a. 
b. 
c. 
d. 
e. 
A 30. kg child stands at one end of a floating 20. kg canoe that is 10. ft long. The child walks to the other end of the canoe. How far does the canoe move in the water assuming water friction is negligible?
A) 10. ft B) 4.0 ft C) 6.0 ft D) 8.0 ft E) 2.0 ft
The eight corners of a cubic lattice unit cell contribute ______________lattice point(s) to the unit cell.
Fill in the blank(s) with the appropriate word(s).