Why are infrared observations useful when observing extrasolar planets?
What will be an ideal response?
Because planets radiate mostly infrared radiation, it is possible to distinguish this from the parent star's light. This allows some spectral analysis of the atmospheres, letting us know of some molecules and atoms in planetary atmospheres, such as carbon dioxide, methane, hydrogen and sodium. In a few cases, water vapor has been detected, which is of particular interest.
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Which of the following is an organic molecule?
A) N2H4 B) B2O2 C) C2H4 D) H2O2
If the 5th order minimum in the diffraction pattern is at 40°, what is the highest order minimum in the pattern?
A) 6 B) 11 C) 8 D) 7 E) 9
The addition of salt to water affects its
A) crystal composition. B) freezing point. C) viscosity. D) liquidity. E) none of the above
Determine the energy stored in C1 when C1 = 10 ?F, C2 = 12 ?F, C3 = 15 ?F, and V0 = 70 V.
A. 6.5 mJ B. 5.1 mJ C. 3.9 mJ D. 8.0 mJ E. 9.8 mJ