The reason Saturn lost very little of its original atmosphere is due to its:
A) rapid rotation.
B) strong magnetic field.
C) ring system.
D) large mass.
E) many moons.
D
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Molecular Speeds: At what temperature would the root mean square speed of oxygen molecules, O2, be 14.0 m/s if oxygen behaves like an ideal gas? The mass of one O2 molecule is 5.312 × 10-26 kg, and the Boltzmann constant is 1.38 × 10-23 J/K.
A. 0.251 K B. 2090 K C. 6270 K D. 1.52 × 1023 K
A beaker is filled to the 500 ml mark with alcohol. What increase in volume (in ml) does the beaker contain when the temperature changes from 5° C to 30° C? (Neglect the expansion of the beaker, evaporation of alcohol and absorption of water vapor by alcohol.) ?alcohol = 1.12 × 10^?4/°C
a. 0.47 b. 0.93 c. 1.4 d. 1.7 e. 2.5
While it has some high volcanoes, most of Venus is relatively ________ in elevation
Fill in the blank(s) with correct word
Which of the following expresses the major idea of Hubble's Law?
A) There must have been a Big Bang. B) All galaxies are moving away from us equally fast. C) The more distant a galaxy is from us, the faster it moves away from us. D) The closer a galaxy is to us, the faster it moves away from us. E) More distant galaxies appear younger.