Beyond our own solar system, the planets found to date have tended to be:
A) Kuiper Belt objects, far from the glare of their suns.
B) large jovians far from stars like our Sun.
C) large jovians with orbits more like terrestrial planets.
D) terrestrials very close to their star, and transiting its disk.
E) imaginary, with no present proof that they really exist.
C
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Light of wavelength 500 nm is incident on a thin sheet of plastic film (n= 1.50 ) in air. What is the thinnest the sheet can be so that the reflected light from the surfaces undergoes constructive interference?
A) 50 nm B) 250 nm C) 333 nm D) 167 nm E) 83 nm
Plutonic rocks subjected to high temperature and pressure transform by
A) recrystallization of existing mineral grains. B) deformation of mineral grains. C) melting down of existing minerals. D) any of these
A kilogram is a unit of
A) mass. B) weight. C) both the same D) none of the above
The purchase by a power company of an area of ground on which to build a power plant is an example of the tragedy of the commons
What will be an ideal response?