The spacecraft called Curiosity is
A) a rover on Mars.
B) an orbiter studying Jupiter.
C) a robotic lander on Venus.
D) currently orbiting Saturn.
A) a rover on Mars.
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You roll a ball off a table and at the same time drop a second ball straight down from the edge of table. The second ball reaches the ground ____________ the first ball reaches the ground
a. before b. at the same time that c. after d. before or after, depending on the masses, e. cannot be determined
The K-ratio in a uranium fuel reactor is defined as the average number of neutrons from each fission event that will cause another event. In a well-functioning reactor, it is desired that the K-ratio have what value?
a. zero b. 0.5 c. 1.0 d. 2.0
Energy and Momentum: Two objects of different masses have momentum of equal, non-zero magnitude. Which object has more kinetic energy?
A. the heavier object B. the lighter object C. They both have the same kinetic energy.