What is the primary reason why a Pluto flyby mission would be cheaper than a Pluto orbiter?
A) The flyby can use less expensive cameras than the orbiter.
B) The flyby is easier to design than the orbiter.
C) The fuel needed for an orbiter to slow down when it reaches Pluto is very expensive in and of itself.
D) The fuel needed for an orbiter to slow down when it reaches Pluto adds a lot of weight to the spacecraft.
E) The question is incorrect; in general, orbiters are cheaper than flybys.
D
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Dark matter must be ____
a. baryonic b. non-baryonic c. neutral d. WIMPs e. isochronic
The proton is made up of which one of the following quark combinations (up, down, strange, charm, top, bottom)?
A) ddu B) ttb C) bst D) uud E) udd
In the chemistry chapters presented in your
textbook, AM refers to? a) the average mass of all elements taking part in a given reaction. b) the atomic mass of a particular element. c) the total mass present after a reaction has occurred. d) the time during the day prior to 12 o'clock noon.
Which of these would typically be the brightest star in a young open cluster?
A) A2Ib B) K3II C) B1V D) M3Ia E) G2V