Which of the following is not an advantage of the Hubble Space Telescope over ground-based telescopes?
A) It never has to close because of cloudy skies.
B) Stars do not twinkle when observed from space.
C) It is closer to the stars.
D) It can observe infrared and ultraviolet light, as well as visible light.
C
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The proper abbreviation for ‘seconds' is __________
Fill in the blank(s) with correct word
Based on its surface features, the most important event on Venus in the past billion years or so was
A) a global "repaving" that erased essentially all the surface features that had existed earlier. B) the eruption of a giant volcano that formed one of Venus's "continents." C) the impact of an unusually large asteroid that left a deep scar on one side of the planet. D) the onset of mantle convection, which caused Venus's lithosphere to split into plates like those on Earth.
During an adiabatic compression, a volume of air decreases to 1/4 its original size. Calculate its final pressure if its original pressure was 1 atm. (Assume the air behaves like an ideal gas with ? = 1.4.)
a. 7.0 atm b. 5.6 atm c. 3.5 atm d. 2.2 atm e. 0.14 atm
Consider the fictional case of the incredible shrinking man. If his height shrinks to one-tenth, his area shrinks to
1) 1/10, 2) 1/100, 3) 1/1000, 4) 1/10,000, 5) none of these, and his weight would shrink to 6) 1/10. 7) 1/100. 8) 1/1000. 9) 1/10,000. 10) none of these.