According to the principle of equivalence, observations made of falling objects at Galileo's Leaning Tower of Pisa are indistinguishable from observations made in
A) a spaceship orbiting in a gravitational field.
B) a spaceship accelerating at g in deep space.
C) any uniformly moving reference frame.
D) all of the above
E) none of the above
Answer: B
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Fill in the blank(s) with the appropriate word(s).
Which moon has a thick atmosphere made mostly of nitrogen?
A) Titan B) Triton C) Ganymede D) Europa
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Fill in the blank(s) with correct word
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