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ss7ja [257]
3 years ago
12

What two things are needed to create an emission nebula? A) interstellar gas and dust B) hydrogen fusion and helium ionization C

) cool stars and much interstellar dust D) hot stars and interstellar gas, particularly hydrogen E) hydrogen gas and carbon dust
Physics
1 answer:
wolverine [178]3 years ago
8 0

Answer:

D) hot stars and interstellar gas, particularly hydrogen

Explanation:

Emission nebula is the nebula which is formed of the ionized gases which emit light of different wavelengths. The common source of ionization of the emission nebula is high-energy photons mostly which are emitted from hot star present nearby to it.

<u>The emission nebulae include H II regions. An H II region is the region of the interstellar atomic hydrogen which is ionized. It is the cloud of the partially ionized gas in which star formation takes place.</u>

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Answer:

U = (ε0AV^2) / 2d

Explanation:

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Diagram C

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