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Question 1:
Score 0/1
Ceres, the largest asteroid known, has a mass of roughly 8.7E20 kg. If
Ceres passes within 12,000.0 km of the spaceship in which you are
traveling, what force does it exert on you? (Use an approximate value
for your mass, and treat yourself and the asteroid as point objects.)
Enter scientific notation as 1.23E4.
Your Answer:
3.4E5 N
Correct Answer:
0.026±0.002 N [2 significant digits required]
Question 2:
Score 0/1
Several volcanoes have been observed erupting on the surface of
Jupiter’s closest Galilean moon, Io. Suppose that material ejected from
one of these volcanoes reaches a height of
5.90
km after being projected
straight upward with an initial speed of
146
m/s. Given that the radius
of Io is 1820.0 km, calculate Io's mass.
Enter scientific notation as 1.23E4.
Your Answer:
8.61E5 kg
Correct Answer:
8.92E22±2E20 kg [3 significant digits required]
Question 3:
Score 0.33/1
Two satellites orbit the Earth, with satellite 1 at a greater altitude than satellite 2. Answer
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 Spring '08
 RAO
 Physics, Force, Mass

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