__________is the hazy band of light that circles our sky, produced by the glow of our Galaxy
A) Messier 83
B) Cosmos Redshift 7
C) The Milky Way
D) The Pinwheel
C
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Which of these are nearly 90 degrees to the orbit plane of Uranus?
a. Uranus' equator b. the orbital planes of its major satellites c. the orbital plane of its rings d. Uranus' equator, the orbital planes of its major satellites, and the orbital plane of its rings.
According to optimistic estimates, the end of habitability of Earth will come about
A) a few hundred thousand years from now B) a billion years from now C) 3 to 4 billion years from now D) 100 million years from now
A metallic object holds a charge of ?4.8 × 10^?6 C. What total number of electrons does this represent? (e = 1.6 × 10^?19 C is the magnitude of the electronic charge.)
a. 3.0E+13 b. 7.8E+13 c. 1.9E+13 d. 7.8E+14 e. 1.6E+14
The highest mountain on Mars is Olympus Mons, rising 22 000 meters above the Martian surface. If we were to throw an object horizontally off the mountain top, how long would it take to reach the surface? (Ignore atmospheric drag forces and use gMars = 3.72 m/s2.)
a. 1.8 minutes b. 2.4 minutes c. 3.0 minutes d. 0.79 minute