What type of spectrum is observed when the light from a hot, dense body is seen through a cooler, tenuous gas?
A. emission-line
B. continuous
C. absorption-line
D. None of these choices are correct.
Answer: C
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What will be an ideal response?
The Doppler radial velocity technique works best for:
A) planets whose orbits are along our line of sight. B) planets whose orbits are perpendicular to our line of sight. C) planets whose orbits are nearly circular. D) planets whose orbits are very eccentric.
If 25 kg of ice at 0°C is combined with 4 kg of steam at 100°C, what will be the final equilibrium temperature (in °C) of the system?
A. 40 B. 20 C. 60 D. 100 E. 8
Arrange the atoms calcium, barium, chlorine, and bromine in order of increasing atomic radius