A 200-kg spacecraft is launched to the Moon. After it has landed on the Moon, its mass is ________.
A. zero
B. 200 kg
C. about 1/6 its mass on Earth
D. The answer depends on which side of the Moon the spacecraft landed on.
Answer: B
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For a moon the same density as its planet, the Roche limit lies at ________ times the radius of its planet
A) 1.4 B) 2.5 C) 3.6 D) 5.2 E) 7
The term magnetic declination refers to which of the following?
a. angle between Earth's magnetic field and Earth's surface b. Earth's magnetic field strength at the equator c. tendency for Earth's field to reverse itself d. angle between directions to true north and magnetic north
Equipotential surfaces around a point charge are
a. spherical. c. planar. b. cylindrical. d. none of these choices.
With respect to the silica content of the parent rock, what type of magma does partial melting produce?
What will be an ideal response?