The orbit of Triton is ________, very different from all other major moons
Fill in the blank(s) with correct word
retrograde (or clockwise)
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Would water molecules in Venus's atmosphere, whose temperature is 740 K, eventually es-cape into outer space? Note that a water molecule has a mass that is 18 times that of a hy-drogen atom. The escape velocity of Venus is 10 km/s. For comparison, a hydrogen atom has an average velocity of 2.5 km/s at a temperature of 300 K.
a. No, the average velocity of water molecules is 0.9 km/s. b. Yes, the average velocity of water molecules is 0.9 km/s. c. Yes, the average velocity of water molecules is 2.1 km/s. d. No, the average velocity of water molecules is 2.1 km/s. e. Yes, the average velocity of water molecules is 19 km/s.
What are GUTs?
What will be an ideal response?
A billion solar mass black hole would still have a radius of only:
A) 20 AU. B) 15 parsecs. C) 150 kilometers. D) 3 kpc. E) two million light years.
The Huygens probe of the ESA made a successful landing on
A) Mars. B) Saturn. C) Europa. D) Titan. E) Triton.