The Kepler mission uses which technique to detect planet candidates?
A) Radial velocity measurements
B) Direct imaging
C) Measurements of transverse motion
D) Planetary transits
D
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The following images show four planets in our solar system. Rank these planets from left to right based on the number of moons that orbit them, from highest to lowest. (Not to scale.)
What will be an ideal response?
The change in entropy of a mass m of a solid substance which has a latent heat of fusion LF and melts at a temperature T is
A. LFT/m B. mLFln(T) C. mLFT D. mLF/T E. LF/mT
A stone is thrown horizontally from the top of a cliff. One second after leaving your hand it drops a vertical distance of
A) 5 m. B) 10 m. C) 15 m.
The process of leveling of the Earth by the wearing away of high places and the transportation to and deposition of sediments at lower levels is called
a. gradation. b. weathering. c. erosion. d. none of the above.