The conservation of energy applies to satellites in
A) circular orbit.
B) elliptical orbit.
C) both of these
D) neither of these
Answer: C
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A 50-K dense cloud is a blackbody
a. True b. False Indicate whether the statement is true or false
Why does Jupiter have three distinct layers of clouds?
A) The three layers represent clouds made of gases that condense at different temperatures. B) Jupiter has three different types of wind, each of which makes a different type of cloud. C) The three layers reflect regions of Jupiter's atmosphere with different chemical compositions. D) Clouds form randomly, so on average there are always three layers.
Is the actual size of the universe larger than 14 billion light years?
A) The observable universe is 14 billion light years in each direction, so the actual universe is greater than 14 billion light years across. B) We do not have enough information to know this. C) The universe must be exactly equal in size to its age, so it must not be larger than 14 billion light years across in size. D) It is only 14 billion light years across to us; to an observer 10 billion light years away, it is smaller.
Where have scientists begun a concerted search for life outside of Earth?
A) the Moon B) Venus C) Mars D) Jupiter E) Titan